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reorder Dockerfile steps for better layer caching 

Running `apk add` before copying source into the image takes better
adavantage of layer caching when developing and regularly building the
image. This avoids source code changes invalidating the `apk add` layer
and causing that step to run on every image build.

Signed-off-by: Adam Duke <adam.v.duke@gmail.com>
This commit is contained in:
Adam Duke 2016-07-21 19:14:32 -04:00
parent c2a201dabf
commit 41c87559c6
1 changed files with 3 additions and 3 deletions
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@ -3,13 +3,13 @@ FROM golang:1.6-alpine
ENV DISTRIBUTION_DIR /go/src/github.com/docker/distribution
ENV DOCKER_BUILDTAGS include_oss include_gcs
RUN set -ex \
&& apk add --no-cache make git
WORKDIR $DISTRIBUTION_DIR
COPY . $DISTRIBUTION_DIR
COPY cmd/registry/config-dev.yml /etc/docker/registry/config.yml
RUN set -ex \
&& apk add --no-cache make git
RUN make PREFIX=/go clean binaries
VOLUME ["/var/lib/registry"]