Delete unused targets

Makefile

@@ -5,13 +5,6 @@ REVISION  := $(shell git rev-parse --short HEAD)
 SRCS      := $(shell find . -name '*.go' -type f)
 LDFLAGS   := -ldflags="-s -w -X \"main.Version=$(VERSION)\" -X \"main.Revision=$(REVISION)\""
 
-DIST_DIRS := find * -type d -exec
-
-DOCKER_REPOSITORY := quay.io
-DOCKER_IMAGE_NAME := $(DOCKER_REPOSITORY)/dtan4/k8stail
-DOCKER_IMAGE_TAG  ?= latest
-DOCKER_IMAGE      := $(DOCKER_IMAGE_NAME):$(DOCKER_IMAGE_TAG)
-
 .DEFAULT_GOAL := bin/$(NAME)
 
 export GO111MODULE=on
@@ -23,45 +16,14 @@ bin/$(NAME): $(SRCS)
 ci-test:
 	go test -coverpkg=./... -coverprofile=coverage.txt -v ./...
 
-.PHONY: ci-docker-release
-ci-docker-release: docker-build
-	@docker login -u="$(DOCKER_QUAY_USERNAME)" -p="$(DOCKER_QUAY_PASSWORD)" $(DOCKER_REPOSITORY)
-	docker push $(DOCKER_IMAGE)
-
 .PHONY: clean
 clean:
 	rm -rf bin/*
 
-.PHONY: cross-build
-cross-build:
-	for os in darwin linux windows; do \
-		for arch in amd64 386; do \
-			GOOS=$$os GOARCH=$$arch CGO_ENABLED=0 go build $(LDFLAGS) -o dist/$$os-$$arch/$(NAME); \
-		done; \
-	done
-
-.PHONY: dist
-dist:
-	cd dist && \
-	$(DIST_DIRS) cp ../LICENSE {} \; && \
-	$(DIST_DIRS) cp ../README.md {} \; && \
-	$(DIST_DIRS) tar -zcf $(NAME)-$(VERSION)-{}.tar.gz {} \; && \
-	$(DIST_DIRS) zip -r $(NAME)-$(VERSION)-{}.zip {} \; && \
-	cd ..
-
-.PHONY: docker-build
-docker-build:
-	docker build -t $(DOCKER_IMAGE) .
-
 .PHONY: install
 install:
 	go install $(LDFLAGS)
 
-.PHONY: release
-release:
-	git tag $(VERSION)
-	git push origin $(VERSION)
-
 .PHONY: test
 test:
 	go test -cover -v