Update makefile with Development docker image

Signed-off-by: Evan Lezar <elezar@nvidia.com>

Makefile

@@ -1,4 +1,4 @@
-# Copyright (c) 2017-2021, NVIDIA CORPORATION.  All rights reserved.
+# Copyright (c) 2021, NVIDIA CORPORATION.  All rights reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -27,14 +27,39 @@ MODULE := github.com/NVIDIA/nvidia-container-toolkit
 docker-native:
 include $(CURDIR)/docker/docker.mk
 
+ifeq ($(IMAGE),)
+REGISTRY ?= nvidia
+IMAGE=$(REGISTRY)/container-toolkit
+endif
+IMAGE_TAG ?= $(GOLANG_VERSION)
+BUILDIMAGE ?= $(IMAGE):$(IMAGE_TAG)-devel
+
+EXAMPLES := $(patsubst ./examples/%/,%,$(sort $(dir $(wildcard ./examples/*/))))
+EXAMPLE_TARGETS := $(patsubst %,example-%, $(EXAMPLES))
+
+MAKE_TARGETS := binary build all check fmt assert-fmt lint lint-internal vet test examples coverage generate
+
+TARGETS := $(MAKE_TARGETS) $(EXAMPLE_TARGETS)
+
+DOCKER_TARGETS := $(patsubst %,docker-%, $(TARGETS))
+.PHONY: $(TARGETS) $(DOCKER_TARGETS)
+
 GOOS ?= linux
 
 binary:
 	GOOS=$(GOOS) go build -ldflags "-s -w" -o "$(LIB_NAME)" $(MODULE)/cmd/$(LIB_NAME)
 
-# Define the check targets for the Golang codebase
-.PHONY: check fmt assert-fmt ineffassign lint misspell vet
-check: assert-fmt lint misspell vet
+build:
+	GOOS=$(GOOS) go build ./...
+
+examples: $(EXAMPLE_TARGETS)
+$(EXAMPLE_TARGETS): example-%:
+	GOOS=$(GOOS) go build ./examples/$(*)
+
+all: check test build binary
+check: assert-fmt lint vet
+
+# Apply go fmt to the codebase
 fmt:
 	go list -f '{{.Dir}}' $(MODULE)/... \
 		| xargs gofmt -s -l -w
@@ -55,8 +80,12 @@ ineffassign:
 	ineffassign $(MODULE)/...
 
 lint:
-	# We use `go list -f '{{.Dir}}' $(GOLANG_PKG_PATH)/...` to skip the `vendor` folder.
-	go list -f '{{.Dir}}' $(MODULE)/... | xargs golint -set_exit_status
+# We use `go list -f '{{.Dir}}' $(MODULE)/...` to skip the `vendor` folder.
+	go list -f '{{.Dir}}' $(MODULE)/... | grep -v /internal/ | xargs golint -set_exit_status
+
+lint-internal:
+# We use `go list -f '{{.Dir}}' $(MODULE)/...` to skip the `vendor` folder.
+	go list -f '{{.Dir}}' $(MODULE)/internal/... | xargs golint -set_exit_status
 
 misspell:
 	misspell $(MODULE)/...
@@ -65,8 +94,42 @@ vet:
 	go vet $(MODULE)/...
 
 COVERAGE_FILE := coverage.out
-test:
-	go test -coverprofile=$(COVERAGE_FILE) $(MODULE)/...
+test: build
+	go test -v -coverprofile=$(COVERAGE_FILE) $(MODULE)/...
 
 coverage: test
-	go tool cover -func=$(COVERAGE_FILE)
+	cat $(COVERAGE_FILE) | grep -v "_mock.go" > $(COVERAGE_FILE).no-mocks
+	go tool cover -func=$(COVERAGE_FILE).no-mocks
+
+generate:
+	go generate $(MODULE)/...
+
+# Generate an image for containerized builds
+# Note: This image is local only
+.PHONY: .build-image .pull-build-image .push-build-image
+.build-image: docker/Dockerfile.devel
+	if [ x"$(SKIP_IMAGE_BUILD)" = x"" ]; then \
+		$(DOCKER) build \
+			--progress=plain \
+			--build-arg GOLANG_VERSION="$(GOLANG_VERSION)" \
+			--tag $(BUILDIMAGE) \
+			-f $(^) \
+			docker; \
+	fi
+
+.pull-build-image:
+	$(DOCKER) pull $(BUILDIMAGE)
+
+.push-build-image:
+	$(DOCKER) push $(BUILDIMAGE)
+
+$(DOCKER_TARGETS): docker-%: .build-image
+	@echo "Running 'make $(*)' in docker container $(BUILDIMAGE)"
+	$(DOCKER) run \
+		--rm \
+		-e GOCACHE=/tmp/.cache \
+		-v $(PWD):$(PWD) \
+		-w $(PWD) \
+		--user $$(id -u):$$(id -g) \
+		$(BUILDIMAGE) \
+			make $(*)