Change: Split building build and production container images

The build image really rarely needs a rebuild. Therefore split this job
into an own workflow and only rebuild if the corresponding dockerfile or
workflow has changed.

Author: bjoernricks

.github/workflows/build-container.yml

@@ -0,0 +1,65 @@
+name: Build Container Image Builds
+
+on:
+  push:
+    branches: [ main, stable, oldstable ]
+    tags: ["v*"]
+    paths:
+      - .github/workflows/build-container.yml
+      - .docker/build.Dockerfile
+  pull_request:
+    branches: [ main, stable, oldstable ]
+    paths:
+      - .github/workflows/build-container.yml
+      - .docker/build.Dockerfile
+  workflow_dispatch:
+  schedule:
+    # rebuild image every sunday
+    - cron: "0 0 * * 0"
+
+jobs:
+  build:
+    name: Build Images
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+      - name: Setup container meta information
+        id: meta
+        uses: docker/metadata-action@v4
+        with:
+          images: ${{ github.repository }}-build
+          labels: |
+            org.opencontainers.image.vendor=Greenbone
+            org.opencontainers.image.base.name=debian:stable-slim
+          flavor: latest=false # no latest container tag for git tags
+          tags: |
+            # create container tag for git tags
+            type=ref,event=tag
+            type=ref,event=pr
+            # use latest for stable branch
+            type=raw,value=latest,enable=${{ github.ref == format('refs/heads/{0}', 'stable') }}
+            type=raw,value=stable,enable=${{ github.ref == format('refs/heads/{0}', 'stable') }}
+            type=raw,value=oldstable,enable=${{ github.ref == format('refs/heads/{0}', 'oldstable') }}
+            # use unstable for main branch
+            type=raw,value=unstable,enable={{is_default_branch}}
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v2
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v2
+      - name: Login to DockerHub
+        if: github.event_name != 'pull_request'
+        uses: docker/login-action@v2
+        with:
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_TOKEN }}
+      - run: echo "Build and push ${{ steps.container.outputs.image-tags }}"
+      - name: Build and push
+        uses: docker/build-push-action@v3
+        with:
+          context: .
+          push: ${{ github.event_name != 'pull_request' }}
+          file: .docker/build.Dockerfile
+          platforms: linux/amd64,linux/arm64
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}

.github/workflows/container.yml

@@ -9,56 +9,9 @@ on:
   workflow_dispatch:
 
 jobs:
-  build:
-    name: Build Images
-    runs-on: ubuntu-latest
-    steps:
-      - name: Checkout
-        uses: actions/checkout@v3
-      - name: Setup container meta information
-        id: meta
-        uses: docker/metadata-action@v4
-        with:
-          images: ${{ github.repository }}-build
-          labels: |
-            org.opencontainers.image.vendor=Greenbone
-            org.opencontainers.image.base.name=debian/stable-slim
-          flavor: latest=false # no latest container tag for git tags
-          tags: |
-            # create container tag for git tags
-            type=ref,event=tag
-            type=ref,event=pr
-            # use latest for stable branch
-            type=raw,value=latest,enable=${{ github.ref == format('refs/heads/{0}', 'stable') }}
-            type=raw,value=stable,enable=${{ github.ref == format('refs/heads/{0}', 'stable') }}
-            type=raw,value=oldstable,enable=${{ github.ref == format('refs/heads/{0}', 'oldstable') }}
-            # use unstable for main branch
-            type=raw,value=unstable,enable={{is_default_branch}}
-      - name: Set up QEMU
-        uses: docker/setup-qemu-action@v2
-      - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v2
-      - name: Login to DockerHub
-        if: github.event_name != 'pull_request'
-        uses: docker/login-action@v2
-        with:
-          username: ${{ secrets.DOCKERHUB_USERNAME }}
-          password: ${{ secrets.DOCKERHUB_TOKEN }}
-      - run: echo "Build and push ${{ steps.container.outputs.image-tags }}"
-      - name: Build and push
-        uses: docker/build-push-action@v3
-        with:
-          context: .
-          push: ${{ github.event_name != 'pull_request' }}
-          file: .docker/build.Dockerfile
-          platforms: linux/amd64,linux/arm64
-          tags: ${{ steps.meta.outputs.tags }}
-          labels: ${{ steps.meta.outputs.labels }}
-
   production:
     name: Production Images
     runs-on: ubuntu-latest
-    needs: build
     steps:
       - name: Checkout repository
         uses: actions/checkout@v3
@@ -69,7 +22,7 @@ jobs:
           images: ${{ github.repository }}
           labels: |
             org.opencontainers.image.vendor=Greenbone
-            org.opencontainers.image.base.name=debian/stable-slim
+            org.opencontainers.image.base.name=debian:stable-slim
           flavor: latest=false # no latest container tag for git tags
           tags: |
             # create container tag for git tags