Merge pull request #1562 from kube-logging/docker-debug

feat: debug image

Dockerfile

@@ -30,6 +30,11 @@ COPY pkg/ pkg/
 # Build
 RUN CGO_ENABLED=0 GOOS=$TARGETOS GOARCH=$TARGETARCH go build -o /usr/local/bin/manager
 
+FROM builder as debug
+
+RUN CGO_ENABLED=0 GOOS=$TARGETOS GOARCH=$TARGETARCH go install github.com/go-delve/delve/cmd/dlv@latest
+
+CMD ["/go/bin/dlv", "--listen=:40000", "--headless=true", "--api-version=2", "--accept-multiclient", "exec", "/usr/local/bin/manager"]
 
 FROM gcr.io/distroless/static:latest@sha256:6706c73aae2afaa8201d63cc3dda48753c09bcd6c300762251065c0f7e602b25
 

Makefile

@@ -12,6 +12,7 @@ GOVERSION := $(shell go env GOVERSION)
 
 # Image name to use for building/pushing image targets
 IMG ?= controller:local
+IMG_DEBUG ?= controller:debug
 
 # Produce CRDs that work back to Kubernetes 1.11 (no version conversion)
 CRD_OPTIONS ?= "crd:trivialVersions=true,preserveUnknownFields=false,maxDescLen=0"
@@ -79,6 +80,10 @@ docker-build: ## Build the docker image
 	@echo "updating kustomize image patch file for manager resource"
 	sed -i'' -e 's@image: .*@image: '"${IMG}"'@' ./config/default/manager_image_patch.yaml
 
+.PHONY: docker-build-debug
+docker-build-debug: ## Build the debug docker image
+	${DOCKER} build --target debug -t ${IMG_DEBUG} .
+
 .PHONY: docker-build-drain-watch
 docker-build-drain-watch: ## Build the drain-watch docker image
 	${DOCKER} build drain-watch-image -t ${DRAIN_WATCH_IMAGE_TAG_NAME}:${DRAIN_WATCH_IMAGE_TAG_VERSION}