feat: publish docker image to ghcr.io

.github/workflows/publish-docker-image.yaml

@@ -0,0 +1,21 @@
+name: publish-docker-image
+on:
+  workflow_dispatch:
+jobs:
+  build-and-push-image:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
+    steps:
+      - name: docker login
+        run: docker login ghcr.io -u "${{ github.actor }}" -p "${{ secrets.GITHUB_TOKEN }}"
+      - name: checkout source
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+          fetch-tags: true
+      - name: docker build and push
+        env:
+          GIT_REPO: ${{ github.repository }}
+        run: ./build-docker.sh push

Dockerfile

@@ -16,6 +16,7 @@
 
 FROM golang:1.21 as builder
 
+ARG GIT_REPO
 ARG GIT_TAG
 ARG GIT_COMMIT
 ARG BUILD_TIMESTAMP
@@ -26,17 +27,23 @@ RUN ./build.sh
 
 FROM golang:1.21
 
-LABEL org.opencontainers.image.url='https://github.com/apigee/apigee-go-gen' \
-      org.opencontainers.image.documentation='https://github.com/apigee/apigee-go-gen' \
-      org.opencontainers.image.source='https://github.com/apigee/apigee-go-gen' \
-      org.opencontainers.image.vendor='Google LLC' \
-      org.opencontainers.image.licenses='Apache-2.0' \
-      org.opencontainers.image.description='This is a tool for generating Apigee bundles and shared flows'
-
 COPY LICENSE /
-COPY LICENSE-3RD-PARTY /
 
 COPY --from=builder /src/bin/* /usr/local/bin/
 
+ARG GIT_REPO
+ARG GIT_TAG
+ARG GIT_COMMIT
+ARG BUILD_TIMESTAMP
+
+LABEL org.opencontainers.image.url="https://github.com/${GIT_REPO}" \
+      org.opencontainers.image.documentation="https://github.com/${GIT_REPO}" \
+      org.opencontainers.image.source="https://github.com/${GIT_REPO}" \
+      org.opencontainers.image.version="${GIT_TAG}" \
+      org.opencontainers.image.revision="${GIT_COMMIT}" \
+      org.opencontainers.image.vendor='Google LLC' \
+      org.opencontainers.image.licenses='Apache-2.0' \
+      org.opencontainers.image.description='This is a tool for generating Apigee bundles and shared flows'
+
 ENTRYPOINT [ "apigee-go-gen" ]
 

build-docker.sh

@@ -16,4 +16,69 @@
 #
 
 
-docker build -t apigee/apigee-go-gen .
+sortSemver() {
+  local lines=""
+  while read version; do
+    if [[ -z "${lines}" ]] ; then
+      lines=$(printf '%s' "${version}")
+    else
+      lines=$(printf '%s\n%s' "${lines}" "${version}")
+    fi
+  done
+  echo "$lines" | sed -r 's:^v::' | sed -r 's:-:~:' | sort -r -V | sed -r 's:^:v:' | sed -r 's:~:-:'
+}
+
+pickLatestRelease() {
+  local first=""
+  while read version; do
+    first="${version}"
+    if [[ "${version}" != *"-"* ]] ; then
+      echo "${version}"
+      return
+    fi
+  done
+  echo "${first}"
+}
+
+getReleasedTags() {
+  git tag --list  | grep "^v"
+}
+
+getLatestRelease() {
+  echo "$(getReleasedTags | sortSemver | pickLatestRelease)"
+}
+
+
+REGISTRY="${REGISTRY:-ghcr.io}"
+GIT_REPO="${GIT_REPO:-apigee/apigee-go-gen}"
+BUILD_TIMESTAMP=$(date "+%s")
+GIT_COMMIT=$(git rev-parse --short HEAD)
+GIT_TAG=$(git describe --tags --abbrev=0)
+LATEST_TAG="$(getLatestRelease)"
+
+if [[ "${LATEST_TAG}" == "${GIT_TAG}" ]] ; then
+  BUILD_TAG="latest"
+else
+  BUILD_TAG="${GIT_TAG}"
+fi
+
+
+echo "LATEST_TAG=${LATEST_TAG}"
+echo "BUILD_TAG=${BUILD_TAG}"
+echo "GIT_TAG=${GIT_TAG}"
+echo "GIT_COMMIT=${GIT_COMMIT}"
+
+docker build -t "${REGISTRY}/${GIT_REPO}:${BUILD_TAG}" \
+       -t "${REGISTRY}/${GIT_REPO}:${GIT_TAG}" \
+       -t "${REGISTRY}/${GIT_REPO}:${GIT_COMMIT}" \
+       --build-arg "GIT_REPO=${GIT_REPO}" \
+       --build-arg="GIT_TAG=${GIT_TAG}" \
+       --build-arg="GIT_COMMIT=${GIT_COMMIT}" \
+       --build-arg="BUILD_TIMESTAMP=${BUILD_TIMESTAMP}" \
+       .
+
+if [ "${1}" == "push" ] ; then
+  docker push "${REGISTRY}/${GIT_REPO}:${BUILD_TAG}"
+  docker push "${REGISTRY}/${GIT_REPO}:${GIT_TAG}"
+  docker push "${REGISTRY}/${GIT_REPO}:${GIT_COMMIT}"
+fi