fix: add app version (#153)

* fix: add app version version is returned by executing clusterlint --version * inject version as build time variable

Author: mo-rieger

Dockerfile

@@ -12,8 +12,9 @@ COPY kube/ kube/
 COPY checks checks/
 
 # Build
+ARG version
 RUN GOFLAGS="-mod=vendor" CGO_ENABLED=0 GOOS=linux GOARCH=amd64 GO111MODULE=on \
- go build -a -o clusterlint main.go
+  go build -ldflags="-X main.Version=$version" -a -o clusterlint main.go
 
 # Use distroless as minimal base image to package the clusterlint binary
 # Refer to https://github.com/GoogleContainerTools/distroless for more details

Makefile

@@ -4,20 +4,20 @@ TAG ?= dev
 
 # Build the docker image
 docker-build:
-docker build . -t ${IMG}:${TAG}
+docker build . -t ${IMG}:${TAG} --build-arg version=${TAG}
 
 # Push the docker image
 docker-push:
 docker push ${IMG}:${TAG}
 
 # Build all binaries and sha sums for release
 build-binaries:
-GOOS=linux GOARCH=amd64 go build -mod=vendor -o clusterlint ./cmd/clusterlint; tar -czvf clusterlint-${TAG}-linux-amd64.tar.gz ./clusterlint
-GOOS=linux GOARCH=386 go build -mod=vendor -o clusterlint ./cmd/clusterlint; tar -czvf clusterlint-${TAG}-linux-386.tar.gz ./clusterlint
-GOOS=darwin GOARCH=amd64 go build -mod=vendor -o clusterlint ./cmd/clusterlint; tar -czvf clusterlint-${TAG}-darwin-amd64.tar.gz ./clusterlint
-GOOS=darwin GOARCH=arm64 go build -mod=vendor -o clusterlint ./cmd/clusterlint; tar -czvf clusterlint-${TAG}-darwin-arm64.tar.gz ./clusterlint
-GOOS=windows GOARCH=amd64 go build -mod=vendor -o clusterlint.exe ./cmd/clusterlint; tar -czvf clusterlint-${TAG}-windows-amd64.tar.gz ./clusterlint
-GOOS=windows GOARCH=386 go build -mod=vendor -o clusterlint.exe ./cmd/clusterlint; tar -czvf clusterlint-${TAG}-windows-386.tar.gz ./clusterlint
+GOOS=linux GOARCH=amd64 go build -mod=vendor -ldflags="-X main.Version=${TAG}" -o clusterlint ./cmd/clusterlint; tar -czvf clusterlint-${TAG}-linux-amd64.tar.gz ./clusterlint
+GOOS=linux GOARCH=386 go build -mod=vendor -ldflags="-X main.Version=${TAG}" -o clusterlint ./cmd/clusterlint; tar -czvf clusterlint-${TAG}-linux-386.tar.gz ./clusterlint
+GOOS=darwin GOARCH=amd64 go build -mod=vendor -ldflags="-X main.Version=${TAG}" -o clusterlint ./cmd/clusterlint; tar -czvf clusterlint-${TAG}-darwin-amd64.tar.gz ./clusterlint
+GOOS=darwin GOARCH=arm64 go build -mod=vendor -ldflags="-X main.Version=${TAG}" -o clusterlint ./cmd/clusterlint; tar -czvf clusterlint-${TAG}-darwin-arm64.tar.gz ./clusterlint
+GOOS=windows GOARCH=amd64 go build -mod=vendor -ldflags="-X main.Version=${TAG}" -o clusterlint.exe ./cmd/clusterlint; tar -czvf clusterlint-${TAG}-windows-amd64.tar.gz ./clusterlint
+GOOS=windows GOARCH=386 go build -mod=vendor -ldflags="-X main.Version=${TAG}" -o clusterlint.exe ./cmd/clusterlint; tar -czvf clusterlint-${TAG}-windows-386.tar.gz ./clusterlint
 sha256sum clusterlint-${TAG}-linux-amd64.tar.gz >> clusterlint-${TAG}-checksums.sha256
 sha256sum clusterlint-${TAG}-linux-386.tar.gz >> clusterlint-${TAG}-checksums.sha256
 sha256sum clusterlint-${TAG}-darwin-amd64.tar.gz >> clusterlint-${TAG}-checksums.sha256

cmd/clusterlint/main.go

@@ -36,10 +36,13 @@ import (
 
 const delimiter = ":"
 
+var Version string
+
 func main() {
 app := cli.NewApp()
 app.Name = "clusterlint"
 app.Usage = "Linter for k8s objects from a live cluster"
+app.Version = Version
 app.Flags = []cli.Flag{
 cli.StringFlag{
 Name: "kubeconfig",