chore(ci): build docker images with goreleaser

Author: graillus

.goreleaser.yml

@@ -1,5 +1,5 @@
 env:
-  - GO111MODULE=on
+  - CGO_ENABLED=0
 builds:
   - main: cmd/gcrgc/gcrgc.go
     goos:
@@ -11,6 +11,32 @@ builds:
       - amd64
       - arm
       - arm64
+dockers:
+  -
+    goarch: amd64
+    image_templates:
+    - "graillus/gcrgc:{{ .Version }}-amd64"
+    dockerfile: 'Dockerfile.goreleaser'
+    use: buildx
+    build_flag_templates:
+    - "--pull"
+    - "--platform=linux/amd64"
+    - "--label=org.opencontainers.image.title={{ .ProjectName }}"
+    - "--label=org.opencontainers.image.url=https://github.com/graillus/gcrgc"
+    - "--label=org.opencontainers.image.source=https://github.com/graillus/gcrgc"
+    - "--label=org.opencontainers.image.description=A garbage collector tool for container registries"
+    - "--label=org.opencontainers.image.created={{ .Date }}"
+    - "--label=org.opencontainers.image.revision={{ .FullCommit }}"
+    - "--label=org.opencontainers.image.version={{ .Version }}"
+    - "--label=org.opencontainers.image.licenses=MIT"
+docker_manifests:
+- name_template: graillus/gcrgc:{{ .Version }}
+  image_templates:
+  - graillus/gcrgc:{{ .Version }}-amd64
+- name_template: graillus/gcrgc:latest
+  image_templates:
+  - graillus/gcrgc:{{ .Version }}-amd64
+
 release:
   prerelease: auto
 changelog:

Dockerfile

@@ -7,4 +7,6 @@ RUN go build -o bin/gcrgc cmd/gcrgc/gcrgc.go
 
 FROM alpine
 
-COPY --from=build /go/src/github.com/graillus/gcrgc/bin/gcrgc /usr/local/bin/gcrgc
+COPY --from=build /go/src/github.com/graillus/gcrgc/bin/gcrgc /usr/bin/gcrgc
+
+ENTRYPOINT ["/usr/bin/gcrgc"]

Dockerfile.goreleaser

@@ -0,0 +1,5 @@
+FROM alpine
+
+COPY gcrgc /usr/bin/gcrgc
+
+ENTRYPOINT ["/usr/bin/gcrgc"]

README.md

@@ -37,7 +37,7 @@ You can use a service account as well by setting the `GOOGLE_APPLICATION_CREDENT
 1. Download your [desired version](https://github.com/graillus/gcrgc/releases)
 2. Extract it
 ```bash
-tar xvf gcrgc_0.4.0_linux_amd64.tar.gz
+tar xvf gcrgc_0.4.4_linux_amd64.tar.gz
 ```
 3. Move binary to desired destination
 ```bash