chore(ci): slim down PR workflow, beef up merge queue (ublue-os#69)

Co-authored-by: Jorge O. Castro <jorge.castro@gmail.com>

.github/workflows/build.yml

@@ -1,4 +1,4 @@
-name: build-ublue
+name: Build and Push Image
 on:
   pull_request:
     branches:
@@ -14,8 +14,6 @@ on:
     paths-ignore:
       - '**.md'
       - '**.txt'
-  merge_group:
-    types: [checks_requested]
   workflow_dispatch:
 env:
     IMAGE_BASE_NAME: bluefin

.github/workflows/merge-group.yml

@@ -0,0 +1,114 @@
+name: choo-choo
+on:
+  merge_group:
+    types: [checks_requested]
+  workflow_dispatch:
+env:
+    IMAGE_BASE_NAME: bluefin
+    IMAGE_REGISTRY: ghcr.io/${{ github.repository_owner }}
+
+jobs:
+  push-ghcr:
+    name: Build image
+    runs-on: ubuntu-22.04
+    permissions:
+      contents: read
+      packages: write
+      id-token: write
+    strategy:
+      fail-fast: false
+      matrix:
+        image_flavor: [main]
+        major_version: [37, 38]
+        include:
+          - major_version: 37
+            is_latest_version: true
+            is_stable_version: true
+          - major_version: 38
+            is_latest_version: false
+            is_stable_version: false
+    steps: 
+      # Checkout push-to-registry action GitHub repository
+      - name: Checkout Push to Registry action
+        uses: actions/checkout@v3
+
+      - name: Matrix Variables
+        run: |
+          if [[ "${{ matrix.image_flavor }}" == "main" ]]; then
+              echo "IMAGE_NAME=bluefin" >> $GITHUB_ENV
+          else
+              echo "IMAGE_NAME=${{ format('{0}-{1}', env.IMAGE_BASE_NAME, matrix.image_flavor) }}" >> $GITHUB_ENV
+          fi
+
+      - name: Generate tags
+        id: generate-tags
+        shell: bash
+        run: |
+          # Generate a timestamp for creating an image version history
+          TIMESTAMP="$(date +%Y%m%d)"
+          MAJOR_VERSION="${{ matrix.major_version }}"
+          COMMIT_TAGS=()
+          BUILD_TAGS=()
+          # Have tags for tracking builds during pull request
+          SHA_SHORT="$(git rev-parse --short HEAD)"
+          COMMIT_TAGS+=("pr-${{ github.event.number }}-${MAJOR_VERSION}")
+          COMMIT_TAGS+=("${SHA_SHORT}-${MAJOR_VERSION}")
+          if [[ "${{ matrix.is_latest_version }}" == "true" ]] && \
+             [[ "${{ matrix.is_stable_version }}" == "true" ]]; then
+              COMMIT_TAGS+=("pr-${{ github.event.number }}")
+              COMMIT_TAGS+=("${SHA_SHORT}")
+          fi
+
+          BUILD_TAGS=("${MAJOR_VERSION}" "${MAJOR_VERSION}-${TIMESTAMP}")
+
+          if [[ "${{ matrix.is_latest_version }}" == "true" ]] && \
+             [[ "${{ matrix.is_stable_version }}" == "true" ]]; then
+              BUILD_TAGS+=("${TIMESTAMP}")
+              BUILD_TAGS+=("latest")
+          fi
+
+          if [[ "${{ github.event_name }}" == "pull_request" ]]; then
+              echo "Generated the following commit tags: "
+              for TAG in "${COMMIT_TAGS[@]}"; do
+                  echo "${TAG}"
+              done
+              alias_tags=("${COMMIT_TAGS[@]}")
+          else
+              alias_tags=("${BUILD_TAGS[@]}")
+          fi
+          echo "Generated the following build tags: "
+          for TAG in "${BUILD_TAGS[@]}"; do
+              echo "${TAG}"
+          done
+          echo "alias_tags=${alias_tags[*]}" >> $GITHUB_OUTPUT
+
+      # Build metadata
+      - name: Image Metadata
+        uses: docker/metadata-action@v4
+        id: meta
+        with:
+          images: |
+            ${{ env.IMAGE_NAME }}
+          labels: |
+            org.opencontainers.image.title=${{ env.IMAGE_NAME }}
+            org.opencontainers.image.description=Fedora Silverblue for Ubuntu Expatriates
+            io.artifacthub.package.readme-url=https://raw.githubusercontent.com/ublue-os/bluefin/bluefin/README.md
+            io.artifacthub.package.logo-url=https://avatars.githubusercontent.com/u/120078124?s=200&v=4
+
+      # Build image using Buildah action
+      - name: Build Image
+        id: build_image
+        uses: redhat-actions/buildah-build@v2
+        with:
+          containerfiles: |
+            ./Containerfile
+          image: ${{ env.IMAGE_NAME }}
+          tags: |
+            ${{ steps.generate-tags.outputs.alias_tags }}
+          build-args: |
+            IMAGE_NAME=${{ env.IMAGE_NAME }}
+            IMAGE_FLAVOR=${{ matrix.image_flavor }}
+            FEDORA_MAJOR_VERSION=${{ matrix.major_version }}
+          labels: ${{ steps.meta.outputs.labels }}
+          oci: false
+

.github/workflows/pr.yml

@@ -0,0 +1,27 @@
+name: Pull Requests
+on:
+  pull_request:
+    branches:
+      - main
+
+jobs:
+  push-ghcr:
+    name: Build and push image
+    runs-on: ubuntu-22.04
+    permissions:
+      contents: read
+      packages: read
+      id-token: read
+
+    steps: 
+      - name: Checkout repository
+        uses: actions/checkout@v3
+        with:
+          fetch-depth: 0
+
+      - name: Lint Code Base
+        uses: github/super-linter/slim@v4
+        env:
+          VALIDATE_ALL_CODEBASE: false
+          DEFAULT_BRANCH: main
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}