add better generate

Signed-off-by: Jess Frazelle <acidburn@microsoft.com>

vendor/github.com/docker/distribution/project/dev-image/Dockerfile

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+FROM ubuntu:14.04
+
+ENV GOLANG_VERSION 1.4rc1
+ENV GOPATH /var/cache/drone
+ENV GOROOT /usr/local/go
+ENV PATH $PATH:$GOROOT/bin:$GOPATH/bin
+
+ENV LANG C
+ENV LC_ALL C
+
+RUN apt-get update && apt-get install -y \
+  wget ca-certificates git mercurial bzr \
+  --no-install-recommends \
+  && rm -rf /var/lib/apt/lists/*
+
+RUN wget https://golang.org/dl/go$GOLANG_VERSION.linux-amd64.tar.gz --quiet && \
+  tar -C /usr/local -xzf go$GOLANG_VERSION.linux-amd64.tar.gz && \
+  rm go${GOLANG_VERSION}.linux-amd64.tar.gz
+
+RUN go get github.com/axw/gocov/gocov github.com/mattn/goveralls github.com/golang/lint/golint

vendor/github.com/docker/distribution/project/hooks/README.md

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+Git Hooks
+=========
+
+To enforce valid and properly-formatted code, there is CI in place which runs `gofmt`, `golint`, and `go vet` against code in the repository.
+
+As an aid to prevent committing invalid code in the first place, a git pre-commit hook has been added to the repository, found in [pre-commit](./pre-commit). As it is impossible to automatically add linked hooks to a git repository, this hook should be linked into your `.git/hooks/pre-commit`, which can be done by running the `configure-hooks.sh` script in this directory. This script is the preferred method of configuring hooks, as it will be updated as more are added.

vendor/github.com/docker/distribution/project/hooks/configure-hooks.sh

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+#!/bin/sh
+
+cd $(dirname $0)
+
+REPO_ROOT=$(git rev-parse --show-toplevel)
+RESOLVE_REPO_ROOT_STATUS=$?
+if [ "$RESOLVE_REPO_ROOT_STATUS" -ne "0" ]; then
+	echo -e "Unable to resolve repository root. Error:\n$REPO_ROOT" > /dev/stderr
+	exit $RESOLVE_REPO_ROOT_STATUS
+fi
+
+set -e
+set -x
+
+# Just in case the directory doesn't exist
+mkdir -p $REPO_ROOT/.git/hooks
+
+ln -f -s $(pwd)/pre-commit $REPO_ROOT/.git/hooks/pre-commit

vendor/github.com/docker/distribution/project/hooks/pre-commit

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+#!/bin/sh
+
+REPO_ROOT=$(git rev-parse --show-toplevel)
+RESOLVE_REPO_ROOT_STATUS=$?
+if [ "$RESOLVE_REPO_ROOT_STATUS" -ne "0" ]; then
+	printf "Unable to resolve repository root. Error:\n%s\n" "$RESOLVE_REPO_ROOT_STATUS" > /dev/stderr
+	exit $RESOLVE_REPO_ROOT_STATUS
+fi
+
+cd $REPO_ROOT
+
+GOFMT_ERRORS=$(gofmt -s -l . 2>&1)
+if [ -n "$GOFMT_ERRORS" ]; then
+	printf 'gofmt failed for the following files:\n%s\n\nPlease run "gofmt -s -l ." in the root of your repository before committing\n' "$GOFMT_ERRORS" > /dev/stderr
+	exit 1
+fi
+
+GOLINT_ERRORS=$(golint ./... 2>&1)
+if [ -n "$GOLINT_ERRORS" ]; then
+	printf "golint failed with the following errors:\n%s\n" "$GOLINT_ERRORS" > /dev/stderr
+	exit 1
+fi
+
+GOVET_ERRORS=$(go vet ./... 2>&1)
+GOVET_STATUS=$?
+if [ "$GOVET_STATUS" -ne "0" ]; then
+	printf "govet failed with the following errors:\n%s\n" "$GOVET_ERRORS" > /dev/stderr
+	exit $GOVET_STATUS
+fi