Use int128/buildx-push-action (#35)

.github/workflows/docker.yaml

@@ -40,7 +40,6 @@ jobs:
           registry: ghcr.io
           username: ${{ github.repository_owner }}
           password: ${{ secrets.GITHUB_TOKEN }}
-      - run: make docker-build
-        if: github.event_name == 'pull_request'
-      - run: make docker-build-push
-        if: github.event_name == 'push'
+      - uses: int128/buildx-push-action@v1
+        with:
+          extra-args: --platform=linux/amd64,linux/arm64

Dockerfile

@@ -7,8 +7,7 @@ COPY Makefile .
 COPY main.go .
 COPY cmd cmd
 COPY formatter formatter
-ARG VERSION
-RUN make VERSION=$VERSION
+RUN make
 
 FROM gcr.io/distroless/base-debian10
 COPY --from=builder /builder/slack-docker /

Makefile

@@ -39,27 +39,3 @@ dist-release: dist
 .PHONY: clean
 clean:
 	-rm $(TARGET)
-
-DOCKER_REPOSITORY := ghcr.io/int128/slack-docker
-DOCKER_PLATFORM := linux/amd64,linux/arm64
-
-.PHONY: docker-build
-docker-build: Dockerfile
-	docker buildx build . \
-		--build-arg=VERSION=$(VERSION) \
-		--platform=$(DOCKER_PLATFORM) \
-		--output=type=image,push=false \
-		--cache-from=type=local,src=/tmp/buildx \
-		--cache-to=type=local,mode=max,dest=/tmp/buildx
-
-.PHONY: docker-build-push
-docker-build-push: Dockerfile
-	docker buildx build . \
-		--push \
-		--build-arg=VERSION=$(VERSION) \
-		--platform=$(DOCKER_PLATFORM) \
-		--tag=$(DOCKER_REPOSITORY):$(VERSION) \
-		--cache-from=type=local,src=/tmp/buildx \
-		--cache-to=type=local,mode=max,dest=/tmp/buildx.new
-	rm -fr /tmp/buildx
-	mv /tmp/buildx.new /tmp/buildx