add flow to push pr image on labels

.github/workflows/push-pr-image.yaml

@@ -0,0 +1,86 @@
+name: Push PR Image on Label
+
+on:
+  pull_request:
+    branches:
+      - master
+    types: [ labeled ]
+
+env:
+  DOCKER_FILE_PATH: Dockerfile
+  REGISTRY: ghcr.io
+
+jobs:
+
+  build-and-push-pr-image:
+    permissions:
+      contents: read
+
+    runs-on: ubuntu-latest
+    name: Build and Push PR Image
+    if: ${{ github.event.label.name == 'build-and-push-pr-image' }}
+    steps:
+    - name: Check out code
+      uses: actions/checkout@v4
+      with:
+        ref: ${{github.event.pull_request.head.sha}}
+        fetch-depth: 0
+
+    - name: Set up Go
+      uses: actions/setup-go@v5
+      with:
+        go-version-file: 'go.mod'
+        check-latest: true
+        cache: true
+
+    - name: Install Dependencies
+      run: |
+        make install
+
+    - name: Run golangci-lint
+      uses: golangci/golangci-lint-action@v5
+      with:
+        version: latest
+        only-new-issues: false
+        args: --timeout 10m
+
+    - name: Generate Tags
+      id: generate_tag
+      run: |
+        sha=${{ github.event.pull_request.head.sha }}
+        tag="SNAPSHOT-PR-${{ github.event.pull_request.number }}-${sha:0:8}"
+        echo "GIT_TAG=$(echo ${tag})" >> $GITHUB_OUTPUT
+
+    - name: Set up QEMU
+      uses: docker/setup-qemu-action@v3
+
+    - name: Set up Docker Buildx
+      uses: docker/setup-buildx-action@v3
+
+    - name: Generate image repository path for ghcr registry
+      run: |
+        echo GHCR_IMAGE_REPOSITORY=${{env.REGISTRY}}/$(echo ${{ github.repository }} | tr '[:upper:]' '[:lower:]') >> $GITHUB_ENV
+
+    - name: Login to ghcr registry
+      uses: docker/login-action@v3
+      with:
+        registry: ${{env.REGISTRY}}
+        username: stakater-user
+        password: ${{secrets.GITHUB_TOKEN}}
+
+    - name: Build Docker Image
+      uses: docker/build-push-action@v6
+      with:
+        context: .
+        file: ${{ env.DOCKER_FILE_PATH  }}
+        pull: true
+        push: true
+        build-args: BUILD_PARAMETERS=${{ env.BUILD_PARAMETERS }}
+        cache-to: type=inline
+        platforms: linux/amd64,linux/arm,linux/arm64
+        tags: |
+          ${{ env.GHCR_IMAGE_REPOSITORY }}:${{ steps.generate_tag.outputs.GIT_TAG }}
+        labels: |
+          org.opencontainers.image.source=${{ github.event.repository.clone_url }}
+          org.opencontainers.image.created=${{ steps.prep.outputs.created }}
+          org.opencontainers.image.revision=${{ github.sha }}