Build Docker container in GitHub actions

.github/workflows/build-docker.yaml

@@ -0,0 +1,51 @@
+name: Build Docker container
+
+env:
+  GITHUB_TAG: ghcr.io/${{ github.repository }}
+
+on:
+  push:
+    branches-ignore:
+      - '*.tmp'
+    tags:
+      - '*'
+  pull_request:
+  workflow_dispatch:
+
+jobs:
+  docker:
+    name: Build Docker container
+    runs-on: ubuntu-latest
+    steps:
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v2
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v2
+
+      - name: Login to GitHub Container Registry
+        uses: docker/login-action@v2
+        with:
+          registry: ghcr.io
+          username: ${{ github.repository_owner }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Extract Docker metadata
+        id: meta
+        uses: docker/metadata-action@v4
+        with:
+          images: ${{ env.GITHUB_TAG }}
+          tags: |
+            "type=ref,event=branch"
+            "type=ref,suffix=-{{sha}},event=branch"
+            "type=ref,suffix=-{{date 'YYYYMMDD'}},event=branch"
+            "type=ref,event=tag"
+            "type=ref,event=pr"
+            "type=raw,value=latest,enable={{is_default_branch}}"
+
+      - name: Build and push
+        uses: docker/build-push-action@v3
+        with:
+          push: true
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}