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.github/workflows/build-and-push.yml

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+name: Build and Push Docker Image
+
+on:
+  workflow_dispatch:
+  push:
+    branches:
+      - main
+
+jobs:
+  build-and-push:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
+    outputs:
+      container_sha: ${{ github.sha }}
+      registry_url: ${{ steps.registry.outputs.url }}
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Set registry URL
+        id: registry
+        run: |
+          if [ "${{ github.server_url }}" = "https://github.com" ]; then
+            echo "url=ghcr.io" >> $GITHUB_OUTPUT
+          else
+            echo "url=${{ github.server_url }}" | sed 's|https://||' >> $GITHUB_OUTPUT
+          fi
+
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v3
+
+      - name: Log in to Container Registry
+        uses: docker/login-action@v3
+        with:
+          registry: ${{ steps.registry.outputs.url }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.PACKAGE_TOKEN || secrets.GITHUB_TOKEN }}
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Build and push multi-arch Docker image
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          push: true
+          platforms: linux/amd64,linux/arm64
+          tags: |
+            ${{ steps.registry.outputs.url }}/${{ github.repository }}:latest
+            ${{ steps.registry.outputs.url }}/${{ github.repository }}:${{ github.sha }}
+          build-args: |
+            COMMIT_SHA=${{ github.sha }}
+          cache-from: type=registry,ref=${{ steps.registry.outputs.url }}/${{ github.repository }}:buildcache
+          cache-to: type=registry,ref=${{ steps.registry.outputs.url }}/${{ github.repository }}:buildcache,mode=max
+          #cache-from: type=gha
+          #cache-to: type=gha,mode=max
+
+      # --- AUTOMATIC REPOSITORY LINKING ---
+      # This label adds an OCI annotation that Gitea uses to automatically
+      # link the package to the repository source code.
+          labels: org.opencontainers.image.source=${{ github.server_url }}/${{ github.repository }}