Improved Makefile and Dockerfile

Dockerfile

@@ -42,7 +42,6 @@ RUN curl -LO https://storage.googleapis.com/kubernetes-release/release/$(curl -s
 RUN export GO111MODULE=auto
 
 RUN mkdir -p $GOPATH/src/github.com/jenkinsci/kubernetes-operator
-ADD . $GOPATH/src/github.com/jenkinsci/kubernetes-operator
 WORKDIR $GOPATH/src/github.com/jenkinsci/kubernetes-operator
 
 RUN mkdir -p /home/builder

Makefile

@@ -416,19 +416,19 @@ endif
 	@echo
 
 .PHONY: image
-image: ## Create the docker image from the Dockerfile
+image: ## Create the docker image from the Dockerfile. This image is used to build linux binary regardless of the system on the host
 	@echo "+ $@"
 	docker build --rm --force-rm --no-cache \
 	--build-arg GO_VERSION=$(GO_VERSION) \
 	--build-arg MINIKUBE_VERSION=$(MINIKUBE_VERSION) \
 	--build-arg OPERATOR_SDK_VERSION=$(OPERATOR_SDK_VERSION) \
-	-t infrastructure/runner .
+	-t jenkins-operator/runner .
 
 .PHONY: indocker
 PWD := $(shell pwd)
 DOCKER_HOST_IP := $(shell minikube docker-env | grep DOCKER_HOST | cut -d '"' -f 2)
 MINIKUBE_IP := $(shell minikube ip)
-indocker: image ## Run make in a docker container
+indocker: minikube-run image ## Run make in a docker container
 	@echo "+ $@"
 	docker run --rm -it $(DOCKER_FLAGS) \
 		-v /var/run/docker.sock:/var/run/docker.sock \
@@ -437,4 +437,4 @@ indocker: image ## Run make in a docker container
 		--mount type=bind,source=$(HOME)/.kube,target=/home/builder/.kube \
 		-e DOCKER_HOST=$(DOCKER_HOST_IP) \
 		-e MINIKUBE_IP=$(MINIKUBE_IP) \
-		infrastructure/runner
+		jenkins-operator/runner