Add docker multiarch build and push to release

Co-authored-by: Ben Johnson <benbjohnson@yahoo.com>

.github/workflows/release.docker.yml

@@ -0,0 +1,56 @@
+on:
+  release:
+    types:
+      - published
+  pull_request:
+    types:
+      - opened
+      - synchronize
+      - reopened
+    branches-ignore:
+      - "dependabot/**"
+
+name: Release (Docker)
+jobs:
+  docker:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        include:
+          - platform: linux/amd64
+          - platform: linux/arm64
+
+    env:
+      VERSION: "${{ github.event_name == 'release' && github.event.release.name || github.sha }}"
+
+    steps:
+      - uses: actions/checkout@v2
+      - uses: docker/setup-qemu-action@v1
+      - uses: docker/setup-buildx-action@v1
+
+      - uses: docker/login-action@v1
+        with:
+          username: benbjohnson
+          password: ${{ secrets.DOCKERHUB_TOKEN }}
+      
+      - id: meta
+        uses: docker/metadata-action@v3
+        with:
+          images: litestream/litestream
+          tags: |
+            type=ref,event=branch
+            type=ref,event=pr
+            type=sha
+            type=sha,format=long
+            type=semver,pattern={{version}}
+            type=semver,pattern={{major}}.{{minor}}
+      
+      - uses: docker/build-push-action@v2
+        with:
+          context: .
+          push: true
+          platforms: ${{ matrix.platform }}
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+          build-args: |
+            LITESTREAM_VERSION=${{ env.VERSION }}

.github/workflows/release.linux.yml

@@ -1,7 +1,7 @@
 on:
   release:
     types:
-      - created
+      - published
   pull_request:
     types:
       - opened
@@ -132,4 +132,3 @@ jobs:
         run: sleep 60 && gh workflow run deploy.yml -R benbjohnson/litestream-test-runner -f run_id=${{ github.run_id }} -f litestream_version=${{ github.sha }}
         env:
           GITHUB_TOKEN: ${{ secrets.PAT_TOKEN }}
-

Dockerfile

@@ -1,11 +1,15 @@
-FROM golang:1.16 as builder
+FROM golang:1.17 as builder
+
 WORKDIR /src/litestream
 COPY . .
+
 ARG LITESTREAM_VERSION=latest
+
 RUN --mount=type=cache,target=/root/.cache/go-build \
 	--mount=type=cache,target=/go/pkg \
 	go build -ldflags "-s -w -X 'main.Version=${LITESTREAM_VERSION}' -extldflags '-static'" -tags osusergo,netgo,sqlite_omit_load_extension -o /usr/local/bin/litestream ./cmd/litestream
 
+
 FROM alpine
 COPY --from=builder /usr/local/bin/litestream /usr/local/bin/litestream
 ENTRYPOINT ["/usr/local/bin/litestream"]