chore: migrate to go modules

vendor/github.com/containous/go-bindata/Makefile

@@ -0,0 +1,31 @@
+.PHONY: all clean checks test build image dependencies
+
+SRCS = $(shell git ls-files '*.go' | grep -v '^vendor/')
+
+MAIN_DIRECTORY := ./go-bindata/
+BIN_OUTPUT := dist/go-bindata
+
+TAG_NAME := $(shell git tag -l --contains HEAD)
+SHA := $(shell git rev-parse HEAD)
+VERSION := $(if $(TAG_NAME),$(TAG_NAME),$(SHA))
+
+default: clean test build
+
+clean:
+	rm -rf dist/ builds/ cover.out
+
+build: clean
+	@echo Version: $(VERSION)
+	go build -v -ldflags '-X "main.AppVersion=${VERSION}"' -o ${BIN_OUTPUT} ${MAIN_DIRECTORY}
+
+dependencies:
+	dep ensure -v
+
+test: clean
+	go test -v -cover ./...
+
+testdata:
+	make -C testdata
+
+fmt:
+	gofmt -s -l -w $(SRCS)