CI: add ECR publish

.github/workflows/publish-container.yaml

@@ -0,0 +1,56 @@
+name: publish-container
+
+on:
+  pull_request:
+    branches:
+      - main
+  push:
+    branches:
+      - main
+    tags:
+      - "v*.*.*"
+
+jobs:
+  docker:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
+    steps:
+      - name: Checkout
+        uses: actions/checkout@8ade135a41bc03ea155e62e844d188df1ea18608 # v4.1.0
+        with:
+          ref: ${{ github.event.pull_request.head.sha }}
+      - name: Docker meta
+        id: meta
+        uses: docker/metadata-action@96383f45573cb7f253c731d3b3ab81c87ef81934 # v5.0.0
+        with:
+          images: |
+            ghcr.io/tkhq/traefik-plugin-geoblock
+          tags: |
+            type=raw,value=latest,enable={{is_default_branch}}
+            type=ref,event=pr
+            type=semver,pattern={{version}}
+            type=sha,format=long
+      - name: Get committer date
+        run: |
+          echo "committer_date=$(git log -1 --pretty=%ct)" >> "$GITHUB_ENV"
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@f95db51fddba0c2d1ec667646a06c2ce06100226 # v3.0.0
+      - name: Login to GHCR
+        if: github.event_name != 'pull_request'
+        uses: docker/login-action@343f7c4344506bcbf9b4de18042ae17996df046d # v3.0.0
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+      - name: Build and push
+        uses: docker/build-push-action@0565240e2d4ab88bba5387d719585280857ece09 # v5.0.0
+        with:
+          context: .
+          platforms: linux/amd64,linux/arm64
+          build-args: |
+            SOURCE_DATE_EPOCH=${{ env.committer_date }}
+          provenance: "false"
+          push: ${{ github.event_name != 'pull_request' }}
+          tags: ${{ steps.meta.outputs.tags }}