Added more code checks

Added missspelling
Added fmt, vet, lint, ineffassign

Signed-off-by: Flavio Crisciani <flavio.crisciani@docker.com>

Makefile

@@ -1,4 +1,4 @@
-.PHONY: all all-local build build-local clean cross cross-local check check-code check-format run-tests integration-tests check-local coveralls circle-ci-cross circle-ci-build circle-ci-check circle-ci
+.PHONY: all all-local build build-local clean cross cross-local vet lint misspell check check-code check-format run-tests integration-tests check-local coveralls circle-ci-cross circle-ci-build circle-ci-check circle-ci
 SHELL=/bin/bash
 build_image=libnetworkbuild
 dockerargs = --privileged -v $(shell pwd):/go/src/github.com/docker/libnetwork -w /go/src/github.com/docker/libnetwork
@@ -7,6 +7,7 @@ docker = docker run --rm -it ${dockerargs} $$EXTRA_ARGS ${container_env} ${build
 ciargs = -e CIRCLECI -e "COVERALLS_TOKEN=$$COVERALLS_TOKEN" -e "INSIDECONTAINER=-incontainer=true"
 cidocker = docker run ${dockerargs} ${ciargs} $$EXTRA_ARGS ${container_env} ${build_image}
 CROSS_PLATFORMS = linux/amd64 linux/386 linux/arm windows/amd64
+PACKAGES=$(shell go list ./... | grep -v /vendor/)
 export PATH := $(CURDIR)/bin:$(PATH)
 hostOS = ${shell go env GOHOSTOS}
 ifeq (${hostOS}, solaris)
@@ -22,25 +23,31 @@ all: ${build_image}.created build check integration-tests clean
 all-local: build-local check-local integration-tests-local clean
 
 ${build_image}.created:
+	@echo "🐳 $@"
 	docker build -f Dockerfile.build -t ${build_image} .
 	touch ${build_image}.created
 
 build: ${build_image}.created
-	@echo "Building code... "
+	@echo "🐳 $@"
 	@${docker} ./wrapmake.sh build-local
-	@echo "Done building code"
 
 build-local:
+	@echo "🐳 $@"
 	@mkdir -p "bin"
 	go build -tags experimental -o "bin/dnet" ./cmd/dnet
 	go build -o "bin/docker-proxy" ./cmd/proxy
 
 clean:
+	@echo "🐳 $@"
 	@if [ -d bin ]; then \
 		echo "Removing dnet and proxy binaries"; \
 		rm -rf bin; \
 	fi
 
+force-clean: clean
+	@echo "🐳 $@"
+	@rm -rf ${build_image}.created
+
 cross: ${build_image}.created
 	@mkdir -p "bin"
 	@for platform in ${CROSS_PLATFORMS}; do \
@@ -50,25 +57,19 @@ cross: ${build_image}.created
 	done
 
 cross-local:
+	@echo "🐳 $@"
 	go build -o "bin/dnet-$$GOOS-$$GOARCH" ./cmd/dnet
 	go build -o "bin/docker-proxy-$$GOOS-$$GOARCH" ./cmd/proxy
 
 check: ${build_image}.created
 	@${docker} ./wrapmake.sh check-local
 
-check-code:
-	@echo "Checking code... "
-	test -z "$$(golint ./... | grep -Ev 'vendor|.pb.go:' | tee /dev/stderr)"
-	test -z "$$(go vet ./... 2>&1 > /dev/null | grep -Ev 'vendor|exit' | tee /dev/stderr)"
-	@echo "Done checking code"
+check-code: lint vet ineffassign
 
-check-format:
-	@echo "Checking format... "
-	test -z "$$(gofmt -s -l . | grep -v vendor/ | tee /dev/stderr)"
-	@echo "Done checking format"
+check-format: fmt misspell
 
 run-tests:
-	@echo "Running tests... "
+	@echo "🐳 Running tests... "
 	@echo "mode: count" > coverage.coverprofile
 	@for dir in $$( ${gnufind} . -maxdepth 10 -not -path './.git*' -not -path '*/_*' -not -path './vendor/*' -type d); do \
 	    if [ ${hostOS} == solaris ]; then \
@@ -130,6 +131,28 @@ integration-tests: ./bin/dnet
 coveralls:
 	-@goveralls -service circleci -coverprofile=coverage.coverprofile -repotoken $$COVERALLS_TOKEN
 
+# Depends on binaries because vet will silently fail if it can not load compiled imports
+vet: ## run go vet
+	@echo "🐳 $@"
+	@test -z "$$(go vet ${PACKAGES} 2>&1 | grep -v 'constant [0-9]* not a string in call to Errorf' | egrep -v '(timestamp_test.go|duration_test.go|exit status 1)' | tee /dev/stderr)"
+
+misspell:
+	@echo "🐳 $@"
+	@test -z "$$(find . -type f | grep -v vendor/ | grep -v bin/ | grep -v .git/ | grep -v MAINTAINERS | xargs misspell | tee /dev/stderr)"
+
+fmt: ## run go fmt
+	@echo "🐳 $@"
+	@test -z "$$(gofmt -s -l . | grep -v vendor/ | grep -v ".pb.go$$" | tee /dev/stderr)" || \
+		(echo "👹 please format Go code with 'gofmt -s -w'" && false)
+
+lint: ## run go lint
+	@echo "🐳 $@"
+	@test -z "$$(golint ./... | grep -v vendor/ | grep -v ".pb.go:" | grep -v ".mock.go" | tee /dev/stderr)"
+
+ineffassign: ## run ineffassign
+	@echo "🐳 $@"
+	@test -z "$$(ineffassign . | grep -v vendor/ | grep -v ".pb.go:" | grep -v ".mock.go" | tee /dev/stderr)"
+
 # CircleCI's Docker fails when cleaning up using the --rm flag
 # The following targets are a workaround for this
 circle-ci-cross: ${build_image}.created