diff --git a/vendor.conf b/vendor.conf
index b67e03ad..4f52b597 100644
--- a/vendor.conf
+++ b/vendor.conf
@@ -49,3 +49,4 @@ gopkg.in/square/go-jose.v1 40d457b439244b546f023d056628e5184136899b
gopkg.in/yaml.v2 bef53efd0c76e49e6de55ead051f886bea7e9420
rsc.io/letsencrypt e770c10b0f1a64775ae91d240407ce00d1a5bdeb https://github.com/dmcgowan/letsencrypt.git
github.com/opencontainers/go-digest a6d0ee40d4207ea02364bd3b9e8e77b9159ba1eb
+github.com/opencontainers/image-spec e0536ae0cb47b8fed6afdaa9ba2589f6bd915caa
diff --git a/vendor/github.com/opencontainers/image-spec/LICENSE b/vendor/github.com/opencontainers/image-spec/LICENSE
new file mode 100644
index 00000000..9fdc20fd
--- /dev/null
+++ b/vendor/github.com/opencontainers/image-spec/LICENSE
@@ -0,0 +1,191 @@
+
+ Apache License
+ Version 2.0, January 2004
+ http://www.apache.org/licenses/
+
+ TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+ 1. Definitions.
+
+ "License" shall mean the terms and conditions for use, reproduction,
+ and distribution as defined by Sections 1 through 9 of this document.
+
+ "Licensor" shall mean the copyright owner or entity authorized by
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+ otherwise, or (ii) ownership of fifty percent (50%) or more of the
+ outstanding shares, or (iii) beneficial ownership of such entity.
+
+ "You" (or "Your") shall mean an individual or Legal Entity
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+ including but not limited to software source code, documentation
+ source, and configuration files.
+
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+ not limited to compiled object code, generated documentation,
+ and conversions to other media types.
+
+ "Work" shall mean the work of authorship, whether in Source or
+ Object form, made available under the License, as indicated by a
+ copyright notice that is included in or attached to the work
+ (an example is provided in the Appendix below).
+
+ "Derivative Works" shall mean any work, whether in Source or Object
+ form, that is based on (or derived from) the Work and for which the
+ editorial revisions, annotations, elaborations, or other modifications
+ represent, as a whole, an original work of authorship. For the purposes
+ of this License, Derivative Works shall not include works that remain
+ separable from, or merely link (or bind by name) to the interfaces of,
+ the Work and Derivative Works thereof.
+
+ "Contribution" shall mean any work of authorship, including
+ the original version of the Work and any modifications or additions
+ to that Work or Derivative Works thereof, that is intentionally
+ submitted to Licensor for inclusion in the Work by the copyright owner
+ or by an individual or Legal Entity authorized to submit on behalf of
+ the copyright owner. For the purposes of this definition, "submitted"
+ means any form of electronic, verbal, or written communication sent
+ to the Licensor or its representatives, including but not limited to
+ communication on electronic mailing lists, source code control systems,
+ and issue tracking systems that are managed by, or on behalf of, the
+ Licensor for the purpose of discussing and improving the Work, but
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+ designated in writing by the copyright owner as "Not a Contribution."
+
+ "Contributor" shall mean Licensor and any individual or Legal Entity
+ on behalf of whom a Contribution has been received by Licensor and
+ subsequently incorporated within the Work.
+
+ 2. Grant of Copyright License. Subject to the terms and conditions of
+ this License, each Contributor hereby grants to You a perpetual,
+ worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+ copyright license to reproduce, prepare Derivative Works of,
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+ 3. Grant of Patent License. Subject to the terms and conditions of
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+ (except as stated in this section) patent license to make, have made,
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+ institute patent litigation against any entity (including a
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+ or a Contribution incorporated within the Work constitutes direct
+ or contributory patent infringement, then any patent licenses
+ granted to You under this License for that Work shall terminate
+ as of the date such litigation is filed.
+
+ 4. Redistribution. You may reproduce and distribute copies of the
+ Work or Derivative Works thereof in any medium, with or without
+ modifications, and in Source or Object form, provided that You
+ meet the following conditions:
+
+ (a) You must give any other recipients of the Work or
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+
+ (b) You must cause any modified files to carry prominent notices
+ stating that You changed the files; and
+
+ (c) You must retain, in the Source form of any Derivative Works
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+
+ (d) If the Work includes a "NOTICE" text file as part of its
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+ wherever such third-party notices normally appear. The contents
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+ do not modify the License. You may add Your own attribution
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+ that such additional attribution notices cannot be construed
+ as modifying the License.
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+ You may add Your own copyright statement to Your modifications and
+ may provide additional or different license terms and conditions
+ for use, reproduction, or distribution of Your modifications, or
+ for any such Derivative Works as a whole, provided Your use,
+ reproduction, and distribution of the Work otherwise complies with
+ the conditions stated in this License.
+
+ 5. Submission of Contributions. Unless You explicitly state otherwise,
+ any Contribution intentionally submitted for inclusion in the Work
+ by You to the Licensor shall be under the terms and conditions of
+ this License, without any additional terms or conditions.
+ Notwithstanding the above, nothing herein shall supersede or modify
+ the terms of any separate license agreement you may have executed
+ with Licensor regarding such Contributions.
+
+ 6. Trademarks. This License does not grant permission to use the trade
+ names, trademarks, service marks, or product names of the Licensor,
+ except as required for reasonable and customary use in describing the
+ origin of the Work and reproducing the content of the NOTICE file.
+
+ 7. Disclaimer of Warranty. Unless required by applicable law or
+ agreed to in writing, Licensor provides the Work (and each
+ Contributor provides its Contributions) on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+ implied, including, without limitation, any warranties or conditions
+ of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+ PARTICULAR PURPOSE. You are solely responsible for determining the
+ appropriateness of using or redistributing the Work and assume any
+ risks associated with Your exercise of permissions under this License.
+
+ 8. Limitation of Liability. In no event and under no legal theory,
+ whether in tort (including negligence), contract, or otherwise,
+ unless required by applicable law (such as deliberate and grossly
+ negligent acts) or agreed to in writing, shall any Contributor be
+ liable to You for damages, including any direct, indirect, special,
+ incidental, or consequential damages of any character arising as a
+ result of this License or out of the use or inability to use the
+ Work (including but not limited to damages for loss of goodwill,
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+
+ 9. Accepting Warranty or Additional Liability. While redistributing
+ the Work or Derivative Works thereof, You may choose to offer,
+ and charge a fee for, acceptance of support, warranty, indemnity,
+ or other liability obligations and/or rights consistent with this
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+ on Your own behalf and on Your sole responsibility, not on behalf
+ of any other Contributor, and only if You agree to indemnify,
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+ incurred by, or claims asserted against, such Contributor by reason
+ of your accepting any such warranty or additional liability.
+
+ END OF TERMS AND CONDITIONS
+
+ Copyright 2016 The Linux Foundation.
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
diff --git a/vendor/github.com/opencontainers/image-spec/README.md b/vendor/github.com/opencontainers/image-spec/README.md
new file mode 100644
index 00000000..5ab5554e
--- /dev/null
+++ b/vendor/github.com/opencontainers/image-spec/README.md
@@ -0,0 +1,167 @@
+# OCI Image Format Specification
+
+
+The OCI Image Format project creates and maintains the software shipping container image format spec (OCI Image Format).
+
+**[The specification can be found here](spec.md).**
+
+This repository also provides [Go types](specs-go), [intra-blob validation tooling, and JSON Schema](schema).
+The Go types and validation should be compatible with the current Go release; earlier Go releases are not supported.
+
+Additional documentation about how this group operates:
+
+- [Code of Conduct](https://github.com/opencontainers/tob/blob/d2f9d68c1332870e40693fe077d311e0742bc73d/code-of-conduct.md)
+- [Roadmap](#roadmap)
+- [Releases](RELEASES.md)
+- [Project Documentation](project.md)
+
+The _optional_ and _base_ layers of all OCI projects are tracked in the [OCI Scope Table](https://www.opencontainers.org/about/oci-scope-table).
+
+## Running an OCI Image
+
+The OCI Image Format partner project is the [OCI Runtime Spec project](https://github.com/opencontainers/runtime-spec).
+The Runtime Specification outlines how to run a "[filesystem bundle](https://github.com/opencontainers/runtime-spec/blob/master/bundle.md)" that is unpacked on disk.
+At a high-level an OCI implementation would download an OCI Image then unpack that image into an OCI Runtime filesystem bundle.
+At this point the OCI Runtime Bundle would be run by an OCI Runtime.
+
+This entire workflow supports the UX that users have come to expect from container engines like Docker and rkt: primarily, the ability to run an image with no additional arguments:
+
+* docker run example.com/org/app:v1.0.0
+* rkt run example.com/org/app,version=v1.0.0
+
+To support this UX the OCI Image Format contains sufficient information to launch the application on the target platform (e.g. command, arguments, environment variables, etc).
+
+## FAQ
+
+**Q: Why doesn't this project mention distribution?**
+
+A: Distribution, for example using HTTP as both Docker v2.2 and AppC do today, is currently out of scope on the [OCI Scope Table](https://www.opencontainers.org/about/oci-scope-table).
+There has been [some discussion on the TOB mailing list](https://groups.google.com/a/opencontainers.org/d/msg/tob/A3JnmI-D-6Y/tLuptPDHAgAJ) to make distribution an optional layer, but this topic is a work in progress.
+
+**Q: What happens to AppC or Docker Image Formats?**
+
+A: Existing formats can continue to be a proving ground for technologies, as needed.
+The OCI Image Format project strives to provide a dependable open specification that can be shared between different tools and be evolved for years or decades of compatibility; as the deb and rpm format have.
+
+Find more [FAQ on the OCI site](https://www.opencontainers.org/faq).
+
+## Roadmap
+
+The [GitHub milestones](https://github.com/opencontainers/image-spec/milestones) lay out the path to the OCI v1.0.0 release in late 2016.
+
+# Contributing
+
+Development happens on GitHub for the spec.
+Issues are used for bugs and actionable items and longer discussions can happen on the [mailing list](#mailing-list).
+
+The specification and code is licensed under the Apache 2.0 license found in the `LICENSE` file of this repository.
+
+## Discuss your design
+
+The project welcomes submissions, but please let everyone know what you are working on.
+
+Before undertaking a nontrivial change to this specification, send mail to the [mailing list](#mailing-list) to discuss what you plan to do.
+This gives everyone a chance to validate the design, helps prevent duplication of effort, and ensures that the idea fits.
+It also guarantees that the design is sound before code is written; a GitHub pull-request is not the place for high-level discussions.
+
+Typos and grammatical errors can go straight to a pull-request.
+When in doubt, start on the [mailing-list](#mailing-list).
+
+## Weekly Call
+
+The contributors and maintainers of all OCI projects have a weekly meeting Wednesdays at 2:00 PM (USA Pacific).
+Everyone is welcome to participate via [UberConference web][UberConference] or audio-only: +1-415-968-0849 (no PIN needed).
+An initial agenda will be posted to the [mailing list](#mailing-list) earlier in the week, and everyone is welcome to propose additional topics or suggest other agenda alterations there.
+Minutes are posted to the [mailing list](#mailing-list) and minutes from past calls are archived [here][minutes].
+
+## Mailing List
+
+You can subscribe and join the mailing list on [Google Groups](https://groups.google.com/a/opencontainers.org/forum/#!forum/dev).
+
+## IRC
+
+OCI discussion happens on #opencontainers on Freenode ([logs][irc-logs]).
+
+## Markdown style
+
+To keep consistency throughout the Markdown files in the Open Container spec all files should be formatted one sentence per line.
+This fixes two things: it makes diffing easier with git and it resolves fights about line wrapping length.
+For example, this paragraph will span three lines in the Markdown source.
+
+## Git commit
+
+### Sign your work
+
+The sign-off is a simple line at the end of the explanation for the patch, which certifies that you wrote it or otherwise have the right to pass it on as an open-source patch.
+The rules are pretty simple: if you can certify the below (from [developercertificate.org](http://developercertificate.org/)):
+
+```
+Developer Certificate of Origin
+Version 1.1
+
+Copyright (C) 2004, 2006 The Linux Foundation and its contributors.
+660 York Street, Suite 102,
+San Francisco, CA 94110 USA
+
+Everyone is permitted to copy and distribute verbatim copies of this
+license document, but changing it is not allowed.
+
+
+Developer's Certificate of Origin 1.1
+
+By making a contribution to this project, I certify that:
+
+(a) The contribution was created in whole or in part by me and I
+ have the right to submit it under the open source license
+ indicated in the file; or
+
+(b) The contribution is based upon previous work that, to the best
+ of my knowledge, is covered under an appropriate open source
+ license and I have the right under that license to submit that
+ work with modifications, whether created in whole or in part
+ by me, under the same open source license (unless I am
+ permitted to submit under a different license), as indicated
+ in the file; or
+
+(c) The contribution was provided directly to me by some other
+ person who certified (a), (b) or (c) and I have not modified
+ it.
+
+(d) I understand and agree that this project and the contribution
+ are public and that a record of the contribution (including all
+ personal information I submit with it, including my sign-off) is
+ maintained indefinitely and may be redistributed consistent with
+ this project or the open source license(s) involved.
+```
+
+then you just add a line to every git commit message:
+
+ Signed-off-by: Joe Smith
+
+using your real name (sorry, no pseudonyms or anonymous contributions.)
+
+You can add the sign off when creating the git commit via `git commit -s`.
+
+### Commit Style
+
+Simple house-keeping for clean git history.
+Read more on [How to Write a Git Commit Message](http://chris.beams.io/posts/git-commit/) or the Discussion section of [`git-commit(1)`](http://git-scm.com/docs/git-commit).
+
+1. Separate the subject from body with a blank line
+2. Limit the subject line to 50 characters
+3. Capitalize the subject line
+4. Do not end the subject line with a period
+5. Use the imperative mood in the subject line
+6. Wrap the body at 72 characters
+7. Use the body to explain what and why vs. how
+ * If there was important/useful/essential conversation or information, copy or include a reference
+8. When possible, one keyword to scope the change in the subject (i.e. "README: ...", "runtime: ...")
+
+
+[UberConference]: https://www.uberconference.com/opencontainers
+[irc-logs]: http://ircbot.wl.linuxfoundation.org/eavesdrop/%23opencontainers/
+[minutes]: http://ircbot.wl.linuxfoundation.org/meetings/opencontainers/
diff --git a/vendor/github.com/opencontainers/image-spec/specs-go/v1/annotations.go b/vendor/github.com/opencontainers/image-spec/specs-go/v1/annotations.go
new file mode 100644
index 00000000..35d81089
--- /dev/null
+++ b/vendor/github.com/opencontainers/image-spec/specs-go/v1/annotations.go
@@ -0,0 +1,56 @@
+// Copyright 2016 The Linux Foundation
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package v1
+
+const (
+ // AnnotationCreated is the annotation key for the date and time on which the image was built (date-time string as defined by RFC 3339).
+ AnnotationCreated = "org.opencontainers.image.created"
+
+ // AnnotationAuthors is the annotation key for the contact details of the people or organization responsible for the image (freeform string).
+ AnnotationAuthors = "org.opencontainers.image.authors"
+
+ // AnnotationURL is the annotation key for the URL to find more information on the image.
+ AnnotationURL = "org.opencontainers.image.url"
+
+ // AnnotationDocumentation is the annotation key for the URL to get documentation on the image.
+ AnnotationDocumentation = "org.opencontainers.image.documentation"
+
+ // AnnotationSource is the annotation key for the URL to get source code for building the image.
+ AnnotationSource = "org.opencontainers.image.source"
+
+ // AnnotationVersion is the annotation key for the version of the packaged software.
+ // The version MAY match a label or tag in the source code repository.
+ // The version MAY be Semantic versioning-compatible.
+ AnnotationVersion = "org.opencontainers.image.version"
+
+ // AnnotationRevision is the annotation key for the source control revision identifier for the packaged software.
+ AnnotationRevision = "org.opencontainers.image.revision"
+
+ // AnnotationVendor is the annotation key for the name of the distributing entity, organization or individual.
+ AnnotationVendor = "org.opencontainers.image.vendor"
+
+ // AnnotationLicenses is the annotation key for the license(s) under which contained software is distributed as an SPDX License Expression.
+ AnnotationLicenses = "org.opencontainers.image.licenses"
+
+ // AnnotationRefName is the annotation key for the name of the reference for a target.
+ // SHOULD only be considered valid when on descriptors on `index.json` within image layout.
+ AnnotationRefName = "org.opencontainers.image.ref.name"
+
+ // AnnotationTitle is the annotation key for the human-readable title of the image.
+ AnnotationTitle = "org.opencontainers.image.title"
+
+ // AnnotationDescription is the annotation key for the human-readable description of the software packaged in the image.
+ AnnotationDescription = "org.opencontainers.image.description"
+)
diff --git a/vendor/github.com/opencontainers/image-spec/specs-go/v1/config.go b/vendor/github.com/opencontainers/image-spec/specs-go/v1/config.go
new file mode 100644
index 00000000..fe799bd6
--- /dev/null
+++ b/vendor/github.com/opencontainers/image-spec/specs-go/v1/config.go
@@ -0,0 +1,103 @@
+// Copyright 2016 The Linux Foundation
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package v1
+
+import (
+ "time"
+
+ digest "github.com/opencontainers/go-digest"
+)
+
+// ImageConfig defines the execution parameters which should be used as a base when running a container using an image.
+type ImageConfig struct {
+ // User defines the username or UID which the process in the container should run as.
+ User string `json:"User,omitempty"`
+
+ // ExposedPorts a set of ports to expose from a container running this image.
+ ExposedPorts map[string]struct{} `json:"ExposedPorts,omitempty"`
+
+ // Env is a list of environment variables to be used in a container.
+ Env []string `json:"Env,omitempty"`
+
+ // Entrypoint defines a list of arguments to use as the command to execute when the container starts.
+ Entrypoint []string `json:"Entrypoint,omitempty"`
+
+ // Cmd defines the default arguments to the entrypoint of the container.
+ Cmd []string `json:"Cmd,omitempty"`
+
+ // Volumes is a set of directories describing where the process is likely write data specific to a container instance.
+ Volumes map[string]struct{} `json:"Volumes,omitempty"`
+
+ // WorkingDir sets the current working directory of the entrypoint process in the container.
+ WorkingDir string `json:"WorkingDir,omitempty"`
+
+ // Labels contains arbitrary metadata for the container.
+ Labels map[string]string `json:"Labels,omitempty"`
+
+ // StopSignal contains the system call signal that will be sent to the container to exit.
+ StopSignal string `json:"StopSignal,omitempty"`
+}
+
+// RootFS describes a layer content addresses
+type RootFS struct {
+ // Type is the type of the rootfs.
+ Type string `json:"type"`
+
+ // DiffIDs is an array of layer content hashes (DiffIDs), in order from bottom-most to top-most.
+ DiffIDs []digest.Digest `json:"diff_ids"`
+}
+
+// History describes the history of a layer.
+type History struct {
+ // Created is the combined date and time at which the layer was created, formatted as defined by RFC 3339, section 5.6.
+ Created *time.Time `json:"created,omitempty"`
+
+ // CreatedBy is the command which created the layer.
+ CreatedBy string `json:"created_by,omitempty"`
+
+ // Author is the author of the build point.
+ Author string `json:"author,omitempty"`
+
+ // Comment is a custom message set when creating the layer.
+ Comment string `json:"comment,omitempty"`
+
+ // EmptyLayer is used to mark if the history item created a filesystem diff.
+ EmptyLayer bool `json:"empty_layer,omitempty"`
+}
+
+// Image is the JSON structure which describes some basic information about the image.
+// This provides the `application/vnd.oci.image.config.v1+json` mediatype when marshalled to JSON.
+type Image struct {
+ // Created is the combined date and time at which the image was created, formatted as defined by RFC 3339, section 5.6.
+ Created *time.Time `json:"created,omitempty"`
+
+ // Author defines the name and/or email address of the person or entity which created and is responsible for maintaining the image.
+ Author string `json:"author,omitempty"`
+
+ // Architecture is the CPU architecture which the binaries in this image are built to run on.
+ Architecture string `json:"architecture"`
+
+ // OS is the name of the operating system which the image is built to run on.
+ OS string `json:"os"`
+
+ // Config defines the execution parameters which should be used as a base when running a container using the image.
+ Config ImageConfig `json:"config,omitempty"`
+
+ // RootFS references the layer content addresses used by the image.
+ RootFS RootFS `json:"rootfs"`
+
+ // History describes the history of each layer.
+ History []History `json:"history,omitempty"`
+}
diff --git a/vendor/github.com/opencontainers/image-spec/specs-go/v1/descriptor.go b/vendor/github.com/opencontainers/image-spec/specs-go/v1/descriptor.go
new file mode 100644
index 00000000..6e442a08
--- /dev/null
+++ b/vendor/github.com/opencontainers/image-spec/specs-go/v1/descriptor.go
@@ -0,0 +1,64 @@
+// Copyright 2016 The Linux Foundation
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package v1
+
+import digest "github.com/opencontainers/go-digest"
+
+// Descriptor describes the disposition of targeted content.
+// This structure provides `application/vnd.oci.descriptor.v1+json` mediatype
+// when marshalled to JSON.
+type Descriptor struct {
+ // MediaType is the media type of the object this schema refers to.
+ MediaType string `json:"mediaType,omitempty"`
+
+ // Digest is the digest of the targeted content.
+ Digest digest.Digest `json:"digest"`
+
+ // Size specifies the size in bytes of the blob.
+ Size int64 `json:"size"`
+
+ // URLs specifies a list of URLs from which this object MAY be downloaded
+ URLs []string `json:"urls,omitempty"`
+
+ // Annotations contains arbitrary metadata relating to the targeted content.
+ Annotations map[string]string `json:"annotations,omitempty"`
+
+ // Platform describes the platform which the image in the manifest runs on.
+ //
+ // This should only be used when referring to a manifest.
+ Platform *Platform `json:"platform,omitempty"`
+}
+
+// Platform describes the platform which the image in the manifest runs on.
+type Platform struct {
+ // Architecture field specifies the CPU architecture, for example
+ // `amd64` or `ppc64`.
+ Architecture string `json:"architecture"`
+
+ // OS specifies the operating system, for example `linux` or `windows`.
+ OS string `json:"os"`
+
+ // OSVersion is an optional field specifying the operating system
+ // version, for example on Windows `10.0.14393.1066`.
+ OSVersion string `json:"os.version,omitempty"`
+
+ // OSFeatures is an optional field specifying an array of strings,
+ // each listing a required OS feature (for example on Windows `win32k`).
+ OSFeatures []string `json:"os.features,omitempty"`
+
+ // Variant is an optional field specifying a variant of the CPU, for
+ // example `v7` to specify ARMv7 when architecture is `arm`.
+ Variant string `json:"variant,omitempty"`
+}
diff --git a/vendor/github.com/opencontainers/image-spec/specs-go/v1/index.go b/vendor/github.com/opencontainers/image-spec/specs-go/v1/index.go
new file mode 100644
index 00000000..4e6c4b23
--- /dev/null
+++ b/vendor/github.com/opencontainers/image-spec/specs-go/v1/index.go
@@ -0,0 +1,29 @@
+// Copyright 2016 The Linux Foundation
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package v1
+
+import "github.com/opencontainers/image-spec/specs-go"
+
+// Index references manifests for various platforms.
+// This structure provides `application/vnd.oci.image.index.v1+json` mediatype when marshalled to JSON.
+type Index struct {
+ specs.Versioned
+
+ // Manifests references platform specific manifests.
+ Manifests []Descriptor `json:"manifests"`
+
+ // Annotations contains arbitrary metadata for the image index.
+ Annotations map[string]string `json:"annotations,omitempty"`
+}
diff --git a/vendor/github.com/opencontainers/image-spec/specs-go/v1/layout.go b/vendor/github.com/opencontainers/image-spec/specs-go/v1/layout.go
new file mode 100644
index 00000000..fc79e9e0
--- /dev/null
+++ b/vendor/github.com/opencontainers/image-spec/specs-go/v1/layout.go
@@ -0,0 +1,28 @@
+// Copyright 2016 The Linux Foundation
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package v1
+
+const (
+ // ImageLayoutFile is the file name of oci image layout file
+ ImageLayoutFile = "oci-layout"
+ // ImageLayoutVersion is the version of ImageLayout
+ ImageLayoutVersion = "1.0.0"
+)
+
+// ImageLayout is the structure in the "oci-layout" file, found in the root
+// of an OCI Image-layout directory.
+type ImageLayout struct {
+ Version string `json:"imageLayoutVersion"`
+}
diff --git a/vendor/github.com/opencontainers/image-spec/specs-go/v1/manifest.go b/vendor/github.com/opencontainers/image-spec/specs-go/v1/manifest.go
new file mode 100644
index 00000000..7ff32c40
--- /dev/null
+++ b/vendor/github.com/opencontainers/image-spec/specs-go/v1/manifest.go
@@ -0,0 +1,32 @@
+// Copyright 2016 The Linux Foundation
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package v1
+
+import "github.com/opencontainers/image-spec/specs-go"
+
+// Manifest provides `application/vnd.oci.image.manifest.v1+json` mediatype structure when marshalled to JSON.
+type Manifest struct {
+ specs.Versioned
+
+ // Config references a configuration object for a container, by digest.
+ // The referenced configuration object is a JSON blob that the runtime uses to set up the container.
+ Config Descriptor `json:"config"`
+
+ // Layers is an indexed list of layers referenced by the manifest.
+ Layers []Descriptor `json:"layers"`
+
+ // Annotations contains arbitrary metadata for the image manifest.
+ Annotations map[string]string `json:"annotations,omitempty"`
+}
diff --git a/vendor/github.com/opencontainers/image-spec/specs-go/v1/mediatype.go b/vendor/github.com/opencontainers/image-spec/specs-go/v1/mediatype.go
new file mode 100644
index 00000000..bad7bb97
--- /dev/null
+++ b/vendor/github.com/opencontainers/image-spec/specs-go/v1/mediatype.go
@@ -0,0 +1,48 @@
+// Copyright 2016 The Linux Foundation
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package v1
+
+const (
+ // MediaTypeDescriptor specifies the media type for a content descriptor.
+ MediaTypeDescriptor = "application/vnd.oci.descriptor.v1+json"
+
+ // MediaTypeLayoutHeader specifies the media type for the oci-layout.
+ MediaTypeLayoutHeader = "application/vnd.oci.layout.header.v1+json"
+
+ // MediaTypeImageManifest specifies the media type for an image manifest.
+ MediaTypeImageManifest = "application/vnd.oci.image.manifest.v1+json"
+
+ // MediaTypeImageIndex specifies the media type for an image index.
+ MediaTypeImageIndex = "application/vnd.oci.image.index.v1+json"
+
+ // MediaTypeImageLayer is the media type used for layers referenced by the manifest.
+ MediaTypeImageLayer = "application/vnd.oci.image.layer.v1.tar"
+
+ // MediaTypeImageLayerGzip is the media type used for gzipped layers
+ // referenced by the manifest.
+ MediaTypeImageLayerGzip = "application/vnd.oci.image.layer.v1.tar+gzip"
+
+ // MediaTypeImageLayerNonDistributable is the media type for layers referenced by
+ // the manifest but with distribution restrictions.
+ MediaTypeImageLayerNonDistributable = "application/vnd.oci.image.layer.nondistributable.v1.tar"
+
+ // MediaTypeImageLayerNonDistributableGzip is the media type for
+ // gzipped layers referenced by the manifest but with distribution
+ // restrictions.
+ MediaTypeImageLayerNonDistributableGzip = "application/vnd.oci.image.layer.nondistributable.v1.tar+gzip"
+
+ // MediaTypeImageConfig specifies the media type for the image configuration.
+ MediaTypeImageConfig = "application/vnd.oci.image.config.v1+json"
+)
diff --git a/vendor/github.com/opencontainers/image-spec/specs-go/version.go b/vendor/github.com/opencontainers/image-spec/specs-go/version.go
new file mode 100644
index 00000000..f4cda6ed
--- /dev/null
+++ b/vendor/github.com/opencontainers/image-spec/specs-go/version.go
@@ -0,0 +1,32 @@
+// Copyright 2016 The Linux Foundation
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package specs
+
+import "fmt"
+
+const (
+ // VersionMajor is for an API incompatible changes
+ VersionMajor = 1
+ // VersionMinor is for functionality in a backwards-compatible manner
+ VersionMinor = 0
+ // VersionPatch is for backwards-compatible bug fixes
+ VersionPatch = 0
+
+ // VersionDev indicates development branch. Releases will be empty string.
+ VersionDev = "-rc6-dev"
+)
+
+// Version is the specification version that the package types support.
+var Version = fmt.Sprintf("%d.%d.%d%s", VersionMajor, VersionMinor, VersionPatch, VersionDev)
diff --git a/vendor/github.com/opencontainers/image-spec/specs-go/versioned.go b/vendor/github.com/opencontainers/image-spec/specs-go/versioned.go
new file mode 100644
index 00000000..58a1510f
--- /dev/null
+++ b/vendor/github.com/opencontainers/image-spec/specs-go/versioned.go
@@ -0,0 +1,23 @@
+// Copyright 2016 The Linux Foundation
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package specs
+
+// Versioned provides a struct with the manifest schemaVersion and mediaType.
+// Incoming content with unknown schema version can be decoded against this
+// struct to check the version.
+type Versioned struct {
+ // SchemaVersion is the image manifest schema that this image follows
+ SchemaVersion int `json:"schemaVersion"`
+}