Add version to release tarball

We don't currently have a VERSION in the release tarball. Which breaks `tkn
version` when building from sources or with package managers (i.e: brew, deb,
rpm etc.. )

On gorelease we grab the curren tag from git which should be defined in the
git pipelineresource and output it to the VERSION file.

Make would then see this file and add the proper flags if he sees it. (the
LDFLAGS can be overrided if needed).

Closes #231

Signed-off-by: Chmouel Boudjnah <chmouel@redhat.com>

.gitignore

@@ -42,3 +42,6 @@ tags
 
 #Mac
 .DS_Store
+
+# Generated from gorelease
+VERSION

Makefile

@@ -1,5 +1,9 @@
 YAML_FILES := $(shell find . -type f -regex ".*y[a]ml" -print)
 
+ifneq (,$(wildcard ./VERSION))
+LDFLAGS := -ldflags "-X github.com/tektoncd/cli/pkg/cmd/version.clientVersion=`cat VERSION`"
+endif
+
 all: bin/tkn test
 
 FORCE:
@@ -12,26 +16,26 @@ cross: amd64 386 arm arm64 ## build cross platform binaries
 
 .PHONY: amd64
 amd64:
-	GOOS=linux GOARCH=amd64 go build -o bin/tkn-linux-amd64 ./cmd/tkn
-	GOOS=windows GOARCH=amd64 go build -o bin/tkn-windows-amd64 ./cmd/tkn
-	GOOS=darwin GOARCH=amd64 go build -o bin/tkn-darwin-amd64 ./cmd/tkn
+	GOOS=linux GOARCH=amd64 go build $(LDFLAGS) -o bin/tkn-linux-amd64 ./cmd/tkn
+	GOOS=windows GOARCH=amd64 go build $(LDFLAGS) -o bin/tkn-windows-amd64 ./cmd/tkn
+	GOOS=darwin GOARCH=amd64 go build $(LDFLAGS) -o bin/tkn-darwin-amd64 ./cmd/tkn
 
 .PHONY: 386
 386:
-	GOOS=linux GOARCH=386 go build -o bin/tkn-linux-386 ./cmd/tkn
-	GOOS=windows GOARCH=386 go build -o bin/tkn-windows-386 ./cmd/tkn
-	GOOS=darwin GOARCH=386 go build -o bin/tkn-darwin-386 ./cmd/tkn
+	GOOS=linux GOARCH=386 go build $(LDFLAGS) -o bin/tkn-linux-386 ./cmd/tkn
+	GOOS=windows GOARCH=386 go build $(LDFLAGS) -o bin/tkn-windows-386 ./cmd/tkn
+	GOOS=darwin GOARCH=386 go build $(LDFLAGS) -o bin/tkn-darwin-386 ./cmd/tkn
 
 .PHONY: arm
 arm:
-	GOOS=linux GOARCH=arm go build -o bin/tkn-linux-arm ./cmd/tkn
+	GOOS=linux GOARCH=arm go build $(LDFLAGS) -o bin/tkn-linux-arm ./cmd/tkn
 
 .PHONY: arm64
 arm64:
-	GOOS=linux GOARCH=arm64 go build -o bin/tkn-linux-arm64 ./cmd/tkn
+	GOOS=linux GOARCH=arm64 go build $(LDFLAGS) -o bin/tkn-linux-arm64 ./cmd/tkn
 
 bin/%: cmd/% ./vendor FORCE
-	@go build -v -o $@ ./$<
+	go build $(LDFLAGS) -v -o $@ ./$<
 
 check: lint test
 
@@ -69,7 +73,7 @@ man: bin/docs ## update manpages
 
 .PHONY: clean
 clean: ## clean build artifacts
-	rm -fR bin
+	rm -fR bin VERSION
 
 .PHONY: fmt ## formats teh god code(excludes vendors dir)
 fmt:

tekton/goreleaser.yml

@@ -27,6 +27,7 @@ spec:
     args:
     - -c
     - "git status; git fetch -p --all"
+    - "git describe --tags > VERSION"
   - name: release
     image: goreleaser/goreleaser
     workingdir: /workspace/src/${inputs.params.package}