Use goreleaser for docker images (#8)

.goreleaser.yml

@@ -1,5 +1,3 @@
-# This is an example goreleaser.yaml file with some sane defaults.
-# Make sure to check the documentation at http://goreleaser.com
 before:
   hooks:
     - go mod download
@@ -38,3 +36,23 @@ changelog:
 release:
   draft: true
   prerelease: auto
+dockers:
+  - goos: linux
+    goarch: amd64
+    binaries:
+      - weep
+    image_templates:
+      - "netflix/{{.ProjectName}}:latest"
+      - "netflix/{{.ProjectName}}:{{ .Tag }}"
+      - "netflix/{{.ProjectName}}:v{{ .Major }}"
+      - "netflix/{{.ProjectName}}:v{{ .Major }}.{{ .Minor }}"
+      - "docker.pkg.github.com/netflix/{{.ProjectName}}/{{.ProjectName}}:latest"
+      - "docker.pkg.github.com/netflix/{{.ProjectName}}/{{.ProjectName}}:{{ .Tag }}"
+      - "docker.pkg.github.com/netflix/{{.ProjectName}}/{{.ProjectName}}:v{{ .Major }}"
+      - "docker.pkg.github.com/netflix/{{.ProjectName}}/{{.ProjectName}}:v{{ .Major }}.{{ .Minor }}"
+    build_flag_templates:
+      - "--pull"
+      - "--label=org.opencontainers.image.created={{.Date}}"
+      - "--label=org.opencontainers.image.title={{.ProjectName}}"
+      - "--label=org.opencontainers.image.revision={{.FullCommit}}"
+      - "--label=org.opencontainers.image.version={{.Version}}"

Dockerfile

@@ -1,5 +1,5 @@
 FROM scratch
 ENV USER=docker
 EXPOSE 9090
-COPY weep-docker /weep
+COPY weep /
 ENTRYPOINT ["/weep"]

Makefile

@@ -31,10 +31,7 @@ build-docker: weep-docker
 	docker build -t weep .
 	docker tag weep:latest $(REGISTRY)/infrasec/weep:$(DOCKER_TAG)
 
-publish-docker:
-	docker push $(REGISTRY)/infrasec/weep:$(DOCKER_TAG)
-
-docker: build-docker publish-docker
+docker: build-docker
 
 fmtcheck:
 	@sh -c "'$(CURDIR)/scripts/gofmtcheck.sh'"

README.md

@@ -156,8 +156,17 @@ make build-docker
 docker run -v ~</optional/path/to/your/mtls/certs>:</optional/path/to/your/mtls/certs> --rm weep --meta-data --role <roleArn>
 ```
 
-#### Publishing a Docker image
+### Releasing
 
-To publish a Docker image, you can invoke `make docker`, which runs `make build-docker` and `make publish-docker`. When run from any branch other than `master`, the image is tagged with the version number and branch name. On the `master` branch the image is tagged with only the version number.
+Weep uses [goreleaser](https://goreleaser.com/) in Github Actions for releases. Check their
+[install docs](https://goreleaser.com/install/) if you would like to experiment with the release process locally.
 
-> To update the version number, change the `VERSION` variable in `Makefile`.
+To create a new release, create and push a tag containing the [semantic version](https://semver.org/):
+
+```bash
+git tag -am "v1.2.3" v1.2.3
+git push origin v1.2.3
+```
+
+Goreleaser will create a draft release on the [Releases page](https://github.com/Netflix/weep/releases). If everything
+looks good, press Publish and the release will be made public.