add loggin info

Dockerfile

@@ -12,22 +12,21 @@ COPY go.sum go.sum
 RUN go mod download
 
 # Copy the go source
-COPY cmd/main.go cmd/main.go
-COPY api/ api/
-COPY internal/controller/ internal/controller/
+COPY . .
 
 # Build
 # the GOARCH has not a default value to allow the binary be built according to the host where the command
 # was called. For example, if we call make docker-build in a local env which has the Apple Silicon M1 SO
 # the docker BUILDPLATFORM arg will be linux/arm64 when for Apple x86 it will be linux/amd64. Therefore,
 # by leaving it empty we can ensure that the container and binary shipped on it will have the same platform.
-RUN CGO_ENABLED=0 GOOS=${TARGETOS:-linux} GOARCH=${TARGETARCH} go build -a -o manager cmd/main.go
+RUN --mount=type=cache,target=/root/.cache/go-build \
+  CGO_ENABLED=0 GOOS=${TARGETOS:-linux} GOARCH=${TARGETARCH} make golangci-build
 
 # Use distroless as minimal base image to package the manager binary
 # Refer to https://github.com/GoogleContainerTools/distroless for more details
 FROM gcr.io/distroless/static:nonroot
 WORKDIR /
-COPY --from=builder /workspace/manager .
+COPY --from=builder /workspace/bin/manager .
 USER 65532:65532
 
 ENTRYPOINT ["/manager"]

Makefile

@@ -1,3 +1,10 @@
+COMMIT                := $(shell git rev-parse HEAD)
+COMMIT_SHORT          := $(shell git rev-parse --short HEAD)
+DATE                  := $(shell date +%Y-%m-%d)
+BRANCH                := $(shell git rev-parse --abbrev-ref HEAD)
+VERSION               ?= ${BRANCH}-${COMMIT_SHORT}
+PKG_LDFLAGS           := github.com/prometheus/common/version
+LDFLAGS               := -s -w -X ${PKG_LDFLAGS}.Version=${VERSION} -X ${PKG_LDFLAGS}.Revision=${COMMIT} -X ${PKG_LDFLAGS}.BuildDate=${DATE} -X ${PKG_LDFLAGS}.Branch=${BRANCH}
 
 # Image URL to use all building/pushing image targets
 IMG ?= controller:latest
@@ -82,13 +89,16 @@ lint-fix: golangci-lint ## Run golangci-lint linter and perform fixes
 
 ##@ Build
 
+.PHONY: golangci-build
+golangci-build: ## Build manager binary.
+	go build -ldflags "${LDFLAGS}" -a -o bin/manager cmd/main.go
+
 .PHONY: build
-build: manifests generate fmt vet ## Build manager binary.
-	go build -o bin/manager cmd/main.go
+build: manifests generate fmt vet golangci-build ## Build manager binary.
 
 .PHONY: run
 run: manifests generate fmt vet ## Run a controller from your host.
-	go run ./cmd/main.go
+	go run -ldflags "${LDFLAGS}" ./cmd/main.go
 
 # If you wish to build the manager image targeting other platforms you can use the --platform flag.
 # (i.e. docker build --platform linux/arm64). However, you must enable docker buildKit for it.

cmd/main.go

@@ -23,6 +23,7 @@ import (
 
 	// Import all Kubernetes client auth plugins (e.g. Azure, GCP, OIDC, etc.)
 	// to ensure that exec-entrypoint and run can make use of them.
+	"github.com/prometheus/common/version"
 	_ "k8s.io/client-go/plugin/pkg/client/auth"
 
 	"k8s.io/apimachinery/pkg/runtime"
@@ -130,6 +131,7 @@ func main() {
 	}
 
 	setupLog.Info("starting manager")
+	setupLog.Info("version", "version", version.Version, "branch", version.Branch, "revision", version.Revision, "builddate", version.BuildDate)
 	if err := mgr.Start(ctrl.SetupSignalHandler()); err != nil {
 		setupLog.Error(err, "problem running manager")
 		os.Exit(1)