update Makefile

Makefile

@@ -1,14 +1,36 @@
 BINARY=kubecrt
 
-VERSION=0.1.0
+TAG=$(shell git for-each-ref refs/tags --sort=-taggerdate --format='%(refname:short)' --count=1)
+MAJOR=`echo $(TAG) | awk -F[v.] '{print $$2}'`
+MINOR=`echo $(TAG) | awk -F[v.] '{print $$3}'`
+PATCH=`echo $(TAG) | awk -F[v.] '{print $$4}'`
 GIT_COMMIT=`git rev-parse --short @`
 LDFLAGS=-X github.com/blendle/kubecrt/config.version=$(VERSION) -X github.com/blendle/kubecrt/config.gitrev=$(GIT_COMMIT)
 
 build:
 	mkdir -p bin
 	go build -o bin/$(BINARY)
 
-release:
-	mkdir -p _dist
-	GOOS=linux GOARCH=amd64 go build -ldflags "-s -w $(LDFLAGS)" -o _dist/$(BINARY)
-	GOOS=darwin GOARCH=amd64 go build -ldflags "-s -w $(LDFLAGS)" -o _dist/$(BINARY)_darwin64
+release-prepare:
+	@mkdir -p _dist
+
+patch: release-prepare
+	@version=v$(MAJOR).$(MINOR).$$(expr $(PATCH) + 1); \
+	git tag $$version; \
+	GOOS=linux GOARCH=amd64 go build -ldflags "-s -w $(LDFLAGS)" -o _dist/$(BINARY)-$$version-linux-amd64; \
+	GOOS=darwin GOARCH=amd64 go build -ldflags "-s -w $(LDFLAGS)" -o _dist/$(BINARY)-$$version-darwin-amd64
+
+minor: release-prepare
+	@version=v$(MAJOR).$$(expr $(MINOR) + 1).0; \
+	git tag $$version; \
+	GOOS=linux GOARCH=amd64 go build -ldflags "-s -w $(LDFLAGS)" -o _dist/$(BINARY)-$$version-linux-amd64; \
+	GOOS=darwin GOARCH=amd64 go build -ldflags "-s -w $(LDFLAGS)" -o _dist/$(BINARY)-$$version-darwin-amd64
+
+major: release-prepare
+	@version=v$$(expr $(MAJOR) + 1).0.0; \
+	git tag $$version; \
+	GOOS=linux GOARCH=amd64 go build -ldflags "-s -w $(LDFLAGS)" -o _dist/$(BINARY)-$$version-linux-amd64; \
+	GOOS=darwin GOARCH=amd64 go build -ldflags "-s -w $(LDFLAGS)" -o _dist/$(BINARY)-$$version-darwin-amd64
+
+push:
+	git push --tags