Publish a docker image

Author: ciaranmcnulty

Diff for: .github/workflows/release.yaml

@@ -6,6 +6,7 @@ on:
 
 jobs:
   release:
+    name: Create release
     runs-on: ubuntu-latest
 
     steps:
@@ -20,3 +21,57 @@ jobs:
       - run: gh release create v${{ steps.versions.outputs.changelog-latest-version }} go/dist/*
         env:
           GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+    outputs:
+      latest-release: ${{ steps.versions.outputs.changelog-latest-version }}
+
+  docker:
+    name: Publish docker images
+    runs-on: ubuntu-latest
+    needs: release
+
+    steps:
+      - name: Download binaries
+        id: download
+        run: |
+          gh release download -D /tmp/binaries -R ${{ github.repository }} v${{ needs.release.outputs.latest-release }} 
+          
+          echo ::set-output name=binary-directory::/tmp/binaries
+          
+          echo "::group::Downloaded"
+          ls -al /tmp/binaries
+          echo "::endgroup::"
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+      - uses: docker/setup-qemu-action@v1
+
+      - uses: docker/setup-buildx-action@v1
+
+      - uses: docker/metadata-action@v4
+        id: meta
+        with:
+          tags: |
+            type=semver,value=${{ needs.release.outputs.latest-release }},pattern={{major}}.{{minor}}.{{patch}}
+            type=semver,value=${{ needs.release.outputs.latest-release }},pattern={{major}}.{{minor}}
+            type=semver,value=${{ needs.release.outputs.latest-release }},pattern={{major}}
+          images: ${{ github.repository }}
+
+      - uses: docker/login-action@v2
+        with:
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_TOKEN }}
+
+      - uses: docker/build-push-action@v3
+        with:
+          context: "{{defaultContext}}:docker"
+          push: true
+          platforms: |
+            linux/386
+            linux/arm
+            linux/amd64
+            linux/arm64
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+          build-contexts: |
+            binaries=${{ steps.download.outputs.binary-directory }}

Diff for: Makefile

@@ -1,9 +1,14 @@
-default:
+default: build
+
+build:
 	cd testdata && make
 	cd go && make
 
 clean:
 	cd testdata && make clean
 	cd go && make clean
 
-.PHONY: default clean
+docker: build
+	docker buildx build ./docker --load --tag=cucumber/json-formatter:latest --build-context binaries=./go/dist
+
+.PHONY: default build clean docker

Diff for: docker/Dockerfile

@@ -0,0 +1,9 @@
+FROM scratch
+
+ARG TARGETOS
+ARG TARGETARCH
+ARG PREFIX=cucumber-json-formatter
+
+COPY --chmod=755 --from=binaries ${PREFIX}-${TARGETOS}-${TARGETARCH} /cucumber-json-formatter
+
+ENTRYPOINT ["/cucumber-json-formatter"]