Change container tags to support semver

Signed-off-by: Paulo Gomes <paulo.gomes@weave.works>

Author: Paulo Gomes

.github/workflows/build.yaml

@@ -92,26 +92,13 @@ jobs:
           tags: localhost:5000/${{ github.repository_owner }}/golang-with-libgit2-all:latest
           cache-from: type=local,src=/tmp/.buildx-cache
           cache-to: type=local,dest=/tmp/.buildx-cache-new,mode=max
-      - name: Build candidate image - libgit2 only
-        id: build_candidate_libgti2_only
-        uses: docker/build-push-action@v3
-        with:
-          context: .
-          file: Dockerfile.libgit2-only
-          platforms: ${{ env.PLATFORMS }}
-          push: true
-          tags: localhost:5000/${{ github.repository_owner }}/golang-with-libgit2-only:latest
-          cache-from: type=local,src=/tmp/.buildx-cache
-          cache-to: type=local,dest=/tmp/.buildx-cache-new,mode=max
       - name: Inspect candidate images
         run: |
           docker buildx imagetools inspect localhost:5000/${{ github.repository_owner }}/golang-with-libgit2-all:latest
-          docker buildx imagetools inspect localhost:5000/${{ github.repository_owner }}/golang-with-libgit2-only:latest
       - name: Test candidate images
         id: test_candidate
         run: |
           IMG=localhost:5000/${{ github.repository_owner }}/golang-with-libgit2-all make test
-          IMG=localhost:5000/${{ github.repository_owner }}/golang-with-libgit2-only LIBGIT2_ONLY=true make test
       - # Temp fix
         # https://github.com/docker/build-push-action/issues/252
         # https://github.com/moby/buildkit/issues/1896
@@ -134,9 +121,7 @@ jobs:
           images: |
             ghcr.io/${{ github.repository_owner }}/golang-with-libgit2-all
           tags: |
-            type=schedule
-            type=ref,event=branch
-            type=ref,event=tag
+            type=semver,pattern=v{{version}}
             type=sha
             type=sha,format=long
       - name: Release candidate image - golang-with-libgit2-all
@@ -162,6 +147,85 @@ jobs:
             cosign sign $image
           done
 
+  build-libgit2-only:
+    runs-on: ubuntu-latest
+    env:
+      PLATFORMS: linux/amd64,linux/arm/v7,linux/arm64
+    services:
+      registry:
+        image: registry:2
+        ports:
+         - 5000:5000
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+      - name: Unshallow
+        run: git fetch --prune --unshallow
+      - name: Setup Cosign
+        uses: sigstore/cosign-installer@main
+      - name: Set up QEMU
+        id: qemu
+        uses: docker/setup-qemu-action@v2
+        with:
+          image: tonistiigi/binfmt:latest
+          platforms: ${{ env.PLATFORMS }}
+      - name: Set up Docker Buildx
+        id: buildx
+        uses: docker/setup-buildx-action@v2
+        with:
+          config-inline: |
+            [worker.oci]
+              max-parallelism = 4
+          driver-opts: network=host
+      - name: Inspect builder
+        run: |
+          echo "Name:      ${{ steps.buildx.outputs.name }}"
+          echo "Endpoint:  ${{ steps.buildx.outputs.endpoint }}"
+          echo "Status:    ${{ steps.buildx.outputs.status }}"
+          echo "Flags:     ${{ steps.buildx.outputs.flags }}"
+          echo "Platforms: ${{ steps.buildx.outputs.platforms }}"
+      - name: Cache Docker layers
+        uses: actions/cache@v3
+        id: cache
+        with:
+          path: /tmp/.buildx-cache
+          key: ${{ runner.os }}-buildx-ghcache-${{ github.sha }}
+          restore-keys: |
+            ${{ runner.os }}-buildx-ghcache-
+      - run: cat ./hack/static.sh
+      - name: Build candidate image - libgit2 only
+        id: build_candidate_libgti2_only
+        uses: docker/build-push-action@v3
+        with:
+          context: .
+          file: Dockerfile.libgit2-only
+          platforms: ${{ env.PLATFORMS }}
+          push: true
+          tags: localhost:5000/${{ github.repository_owner }}/golang-with-libgit2-only:latest
+          cache-from: type=local,src=/tmp/.buildx-cache
+          cache-to: type=local,dest=/tmp/.buildx-cache-new,mode=max
+      - name: Inspect candidate images
+        run: |
+          docker buildx imagetools inspect localhost:5000/${{ github.repository_owner }}/golang-with-libgit2-only:latest
+      - name: Test candidate images
+        id: test_candidate
+        run: |
+          IMG=localhost:5000/${{ github.repository_owner }}/golang-with-libgit2-only LIBGIT2_ONLY=true make test
+      - # Temp fix
+        # https://github.com/docker/build-push-action/issues/252
+        # https://github.com/moby/buildkit/issues/1896
+        name: Move cache
+        run: |
+          rm -rf /tmp/.buildx-cache
+          mv /tmp/.buildx-cache-new /tmp/.buildx-cache
+      - name: Login to GHCR
+        if: github.event_name != 'pull_request'
+        uses: docker/login-action@v2
+        with:
+          registry: ghcr.io
+          username: ${{ github.repository_owner }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
       - name: Compose release candidate metadata - golang-with-libgit2-only
         id: meta_libgit2_only
         uses: docker/metadata-action@v3
@@ -170,9 +234,7 @@ jobs:
           images: |
             ghcr.io/${{ github.repository_owner }}/golang-with-libgit2-only
           tags: |
-            type=schedule
-            type=ref,event=branch
-            type=ref,event=tag
+            type=semver,pattern=v{{version}}
             type=sha
             type=sha,format=long
       - name: Release candidate image - golang-with-libgit2-only

README.md

@@ -94,13 +94,9 @@ FROM go-${BASE_VARIANT} AS build-dependencies-awesome-os
 ### Releasing a new image
 
 For the `main` branch, images are pushed automatically to a tag matching the branch name, and a tag in the format of
-`sha-<Git sha>`. In addition, images are created for new tags, with as preferred format: `libgit2-<libgit2 SemVer>`.
+`sha-<Git sha>`. In addition, images are created for new tags, with as preferred format: `v<SemVer>`.
 
-For example, `libgit2-1.1.1` for an image with **libgit2 1.1.1** included.
-
-In case changes happen to the `Dockerfile` while the `libgit2` version does not change, sequential tags should
-be suffixed with `-<seq num in range>`. For example, `libgit2-1.1.1-2` for the **third** container image
-with the same version.
+For example, `v0.1.0`.
 
 ### Debugging cross-compilation