build image for branch aachen

.github/workflows/mfdzbuild.yml

@@ -0,0 +1,66 @@
+name: MFDZ OTP CI Build
+on:
+  push:
+    branches:
+      - aachen
+jobs:
+  build-linux:
+    runs-on: ubuntu-latest
+    timeout-minutes: 20
+    steps:
+      # Starting in v2.2 checkout action fetches all tags when fetch-depth=0, for auto-versioning.
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+
+      # nodejs is needed because the dynamic download of it via the prettier maven plugin often
+      # times out
+      # Example: https://github.com/opentripplanner/OpenTripPlanner/actions/runs/4490450225/jobs/7897533439
+      - uses: actions/setup-node@v4
+        with:
+          node-version: 18
+
+      # Java setup step completes very fast, no need to run in a preconfigured docker container
+      - name: Set up JDK 21
+        uses: actions/setup-java@v4
+        with:
+          java-version: 21
+          distribution: temurin
+          cache: maven
+
+      - name: Prepare coverage agent, build and test
+        # these are split into two steps because otherwise maven keeps long-running HTTP connections
+        # to Maven Central open which then hang during the package phase because the Azure (Github Actions)
+        # NAT drops them
+        # https://github.com/actions/runner-images/issues/1499
+        # we set nodePath and npmPath to skip downloading the node binary, which frequently times out
+        run: |
+          mvn --batch-mode jacoco:prepare-agent test jacoco:report -P prettierCheck -Dprettier.nodePath=node -Dprettier.npmPath=npm
+          mvn --batch-mode package -Dmaven.test.skip -P prettierSkip
+
+      - name: set up Docker buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: log into the GitHub Container Registry
+        uses: docker/login-action@v3
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ github.token }}
+
+      - name: set date-based tag
+        run: |
+          echo "DATE_TAG=$(date +%Y-%m-%dT%H-%M)" >> $GITHUB_ENV
+
+      - name: build and push Docker image
+        if: github.event_name == 'push' && (github.ref == 'refs/heads/aachen')
+        uses: docker/build-push-action@v6
+        with:
+          push: true
+          tags: |
+            ghcr.io/${{ github.repository }}:${{ github.ref }}
+            ghcr.io/${{ github.repository }}:${{ github.ref }}-${{ env.DATE_TAG }}
+          platforms: linux/amd64,linux/arm64
+          # https://docs.docker.com/build/ci/github-actions/cache/#cache-backend-api
+          cache-from: type=gha
+          cache-to: type=gha,mode=max