Relex version regex in Makefile

Author: databus23

Makefile

@@ -8,7 +8,7 @@ PKG:= github.com/databus23/helm-diff
 
 # Clear the "unreleased" string in BuildMetadata
 LDFLAGS += -X $(PKG)/vendor/k8s.io/helm/pkg/version.BuildMetadata=
-LDFLAGS += -X $(PKG)/vendor/k8s.io/helm/pkg/version.Version=$(shell grep -A1 "package: k8s.io/helm" glide.yaml | sed -n -e 's/[ ]*version: ^\(.*\)/\1/p' )
+LDFLAGS += -X $(PKG)/vendor/k8s.io/helm/pkg/version.Version=$(shell grep -A1 "package: k8s.io/helm" glide.yaml | sed -n -e 's/[ ]*version:.*\(v[.0-9]*\).*/\1/p')
 
 .PHONY: install
 install: bootstrap build