ci: add gitea ci/cd pipeline

.gitea/workflows/docker-build.yml

@@ -0,0 +1,69 @@
+name: Docker Build and Publish
+
+on:
+  push:
+    branches: ["main"]
+    tags: ["v*"]
+
+env:
+  REGISTRY: git.maxboeer.com
+  IMAGE_NAME: components-elixir
+
+jobs:
+  docker-build:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@v4
+
+    - name: Set up Docker Buildx
+      uses: docker/setup-buildx-action@v3
+
+    - name: Extract metadata
+      id: meta
+      uses: docker/metadata-action@v5
+      with:
+        images: ${{ env.REGISTRY }}/${{ github.repository_owner }}/${{ env.IMAGE_NAME }}
+        tags: |
+          type=ref,event=branch
+          type=ref,event=tag
+          type=raw,value=latest,enable={{is_default_branch}}
+          type=raw,value=snapshot-{{sha}},enable={{is_default_branch}}
+
+    - name: Log in to Container Registry
+      uses: docker/login-action@v3
+      with:
+        registry: ${{ env.REGISTRY }}
+        username: ${{ github.actor }}
+        password: ${{ secrets.GITEAX_TOKEN }}
+
+    - name: Build and push Docker image
+      uses: docker/build-push-action@v5
+      with:
+        context: .
+        platforms: linux/amd64,linux/arm64
+        push: true
+        tags: ${{ steps.meta.outputs.tags }}
+        labels: ${{ steps.meta.outputs.labels }}
+        cache-from: type=gha
+        cache-to: type=gha,mode=max
+        build-args: |
+          ELIXIR_VERSION=1.15
+          OTP_VERSION=26
+          DEBIAN_VERSION=bookworm-slim
+
+    - name: Generate summary
+      run: |
+        echo "## Docker Build Summary" >> $GITHUB_STEP_SUMMARY
+        echo "- **Image**: \`${{ env.REGISTRY }}/${{ github.repository_owner }}/${{ env.IMAGE_NAME }}\`" >> $GITHUB_STEP_SUMMARY
+        echo "- **Tags**: " >> $GITHUB_STEP_SUMMARY
+        echo "\`\`\`" >> $GITHUB_STEP_SUMMARY
+        echo "${{ steps.meta.outputs.tags }}" >> $GITHUB_STEP_SUMMARY
+        echo "\`\`\`" >> $GITHUB_STEP_SUMMARY
+        if [[ "${{ github.ref_type }}" == "tag" ]]; then
+          echo "- **Build Type**: Release build for tag \`${{ github.ref_name }}\`" >> $GITHUB_STEP_SUMMARY
+        else
+          echo "- **Build Type**: Snapshot build for branch \`${{ github.ref_name }}\`" >> $GITHUB_STEP_SUMMARY
+        fi
+        echo "- **Commit**: \`${{ github.sha }}\`" >> $GITHUB_STEP_SUMMARY