docker multi-arch build

.github/workflows/docker.yml

@@ -0,0 +1,29 @@
+name: Docker build
+on:
+  push:
+
+jobs:
+  docker:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v1
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v1
+      - name: Login to GitHub Container Registry
+        uses: docker/login-action@v1
+        with:
+          registry: ghcr.io
+          username: ${{ github.repository_owner }}
+          password: ${{ secrets.CR_PAT }}
+      - name: Build and push
+        uses: docker/build-push-action@v2
+        with:
+          context: .
+          platforms: linux/amd64,linux/arm/v6,linux/arm/v7,linux/arm64
+          push: true
+          tags: ghcr.io/0xerr0r/rest-server:latest

Dockerfile

@@ -11,6 +11,11 @@ RUN go build -o rest-server ./cmd/rest-server
 
 FROM alpine
 
+
+LABEL org.opencontainers.image.source="https://github.com/0xERR0R/rest-server" \
+      org.opencontainers.image.url="https://github.com/0xERR0R/rest-server" \
+      org.opencontainers.image.title="Rest Server is a high performance HTTP server that implements restic's REST backend API."
+
 ENV DATA_DIRECTORY /data
 ENV PASSWORD_FILE /data/.htpasswd