update release process: docker build redone, helm chart to release ar…

…tifact, migrate to main branch

.gitattributes

@@ -0,0 +1 @@
+*.sh text eol=lf

.github/workflows/ci.yml

@@ -0,0 +1,55 @@
+name: Continuous Integration
+on:
+  workflow_dispatch: null
+  push:
+    branches:
+      - main
+  pull_request: null
+
+jobs:
+  ci:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        go-version: [ 'stable', 'oldstable' ]
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+      - uses: actions/setup-go@v4
+        with:
+          go-version: ${{ matrix.go-version }}
+      - name: Vet
+        run: make vet
+      - name: Lint
+        run: make lint
+      - name: Helm Lint
+        run: make helm-lint
+      - name: Test
+        run: make test
+      - name: Build
+        run: make build
+  docker-build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+      - name: Docker Meta
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: |
+            linode/linode-cloud-controller-manager
+          tags: |
+            type=raw,value=latest,enable=${{ github.ref == format('refs/heads/{0}', 'main') }}
+            type=semver,pattern={{raw}},value=${{ github.ref_name }}
+      - name: Build Dockerfile
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          push: false
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+          build-args: |
+            REV=${{ github.ref_name }}

.github/workflows/label-sync.yml

@@ -2,7 +2,7 @@ name: Sync labels
 on:
   push:
     branches:
-      - master
+      - main
     paths:
       - .github/labels.yml
 jobs:

.github/workflows/release.yml

@@ -0,0 +1,43 @@
+name: Release
+on:
+  push:
+    tags:
+      - "v*.*.*"
+
+jobs:
+  release:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+      - name: Create Release Artifacts
+        run: make release
+        env:
+          IMAGE_VERSION: ${{ github.ref_name }}
+      - name: Upload Release Artifacts
+        uses: softprops/action-gh-release@v1
+        with:
+          files: |
+            ./release/helm-chart-${{ github.ref_name }}.tgz
+      - name: Docker Meta
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: |
+            linode/linode-cloud-controller-manager
+          tags: |
+            type=raw,value=latest,enable=${{ github.ref == format('refs/heads/{0}', 'main') }}
+            type=semver,pattern={{raw}},value=${{ github.ref_name }}
+      - name: Login to Docker Hub
+        uses: docker/login-action@v3
+        with:
+          username: ${{ secrets.DOCKER_USERNAME }}
+          password: ${{ secrets.DOCKER_PASSWORD }}
+      - name: Build and Push to Docker Hub
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          push: true
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}

.golangci.yml

@@ -2,8 +2,6 @@ linters:
   enable:
     - gofmt
     - goimports
-    - structcheck
-    - varcheck
     - staticcheck
     - unconvert
     - revive

Dockerfile

@@ -1,5 +1,19 @@
-# NB: We now cross-compile the go binary locally using the Makefile
-FROM alpine:latest
-RUN apk update && apk add ca-certificates && rm -rf /var/cache/apk/*
-COPY dist/linode-cloud-controller-manager-linux-amd64 /
-ENTRYPOINT ["/linode-cloud-controller-manager-linux-amd64"]
+FROM golang:1.21-alpine as builder
+RUN mkdir -p /linode
+WORKDIR /linode
+
+COPY go.mod .
+COPY go.sum .
+COPY main.go .
+COPY cloud ./cloud
+COPY sentry ./sentry
+
+RUN go mod download
+RUN go build -a -ldflags '-extldflags "-static"' -o /bin/linode-cloud-controller-manager-linux /linode
+
+FROM alpine:3.18.4
+RUN apk add --update --no-cache ca-certificates
+LABEL maintainers="Linode"
+LABEL description="Linode Cloud Controller Manager"
+COPY --from=builder /bin/linode-cloud-controller-manager-linux /linode-cloud-controller-manager-linux
+ENTRYPOINT ["/linode-cloud-controller-manager-linux"]

Makefile

@@ -1,4 +1,6 @@
 IMG ?= linode/linode-cloud-controller-manager:canary
+RELEASE_DIR ?= release
+GOLANGCI_LINT_IMG := golangci/golangci-lint:v1.55-alpine
 
 export GO111MODULE=on
 
@@ -7,17 +9,22 @@ all: build
 
 .PHONY: clean
 clean:
-	go clean .
-	rm -r dist/*
+	@go clean .
+	@rm -rf ./.tmp
+	@rm -rf dist/*
+	@rm -rf $(RELEASE_DIR)
 
 .PHONY: codegen
 codegen:
 	go generate ./...
 
+.PHONY: vet
+vet: fmt
+	go vet ./...
+
 .PHONY: lint
 lint:
-	docker run --rm -v "$(shell pwd):/var/work:ro" -w /var/work \
-		golangci/golangci-lint:v1.55.2 golangci-lint run -v --timeout=5m
+	docker run --rm -v $(PWD):/app -w /app ${GOLANGCI_LINT_IMG} golangci-lint run -v
 
 .PHONY: fmt
 fmt:
@@ -41,6 +48,12 @@ build: codegen
 		CGO_ENABLED=0 \
 		go build -o dist/linode-cloud-controller-manager .
 
+.PHONY: release
+release:
+	mkdir -p $(RELEASE_DIR)
+	sed -e 's/appVersion: "latest"/appVersion: "$(IMAGE_VERSION)"/g' ./deploy/chart/Chart.yaml
+	tar -czvf ./$(RELEASE_DIR)/helm-chart-$(IMAGE_VERSION).tgz -C ./deploy/chart .
+
 .PHONY: imgname
 # print the Docker image name that will be used
 # useful for subsequently defining it on the shell