add actions

Signed-off-by: Peter Siegmund <developer@mars3142.org>

.gitea/workflows/docker.yml

@@ -0,0 +1,51 @@
+name: Build and Push Multi-Arch Docker Image
+
+on:
+  push:
+    branches:
+      - main
+
+jobs:
+  build-and-push:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v3
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v2
+
+      - name: Set Registry Domain
+        run: |
+          REGISTRY_DOMAIN=$(echo "${{ github.server_url }}" | sed 's|https://||' | sed 's|http://||')
+          echo "REGISTRY_DOMAIN=$REGISTRY_DOMAIN" >> $GITHUB_ENV
+
+      - name: Login to Gitea Registry
+        uses: docker/login-action@v2
+        with:
+          registry: ${{ env.REGISTRY_DOMAIN }}
+          username: ${{ secrets.REGISTRY_USER }}
+          password: ${{ secrets.REGISTRY_PASSWORD }}
+
+      - name: Set up JDK
+        uses: actions/setup-java@v4
+        with:
+          java-version: '17'
+          distribution: 'temurin'
+
+      - name: Extract Version
+        run: |
+          VERSION=$(./mvnw help:evaluate -Dexpression=project.version -q -DforceStdout)
+          echo "VERSION=$VERSION" >> $GITHUB_ENV
+          echo "MAJOR=$(echo $VERSION | cut -d. -f1)" >> $GITHUB_ENV
+          echo "MAJOR_MINOR=$(echo $VERSION | cut -d. -f1,2)" >> $GITHUB_ENV
+
+      - name: Build and Push Multi-Arch Image
+        run: |
+          docker buildx build \
+            --platform linux/amd64,linux/arm64 \
+            -t ${{ env.REGISTRY_DOMAIN }}/${{ github.repository }}:latest \
+            -t ${{ env.REGISTRY_DOMAIN }}/${{ github.repository }}:${{ env.MAJOR }} \
+            -t ${{ env.REGISTRY_DOMAIN }}/${{ github.repository }}:${{ env.MAJOR_MINOR }} \
+            -t ${{ env.REGISTRY_DOMAIN }}/${{ github.repository }}:${{ env.VERSION }} \
+            --push .