Merge pull request #43 from garethjevans/better-dev-version

chore: set a better development version when building locally

Makefile

@@ -1,8 +1,15 @@
+SHELL := /bin/sh
+BINARY_NAME := kubectl-permissions
+REV := $(shell git rev-parse --short HEAD 2> /dev/null || echo 'unknown')
+GIT_TREE_STATE := $(shell test -z "`git status --porcelain`" && echo "clean" || echo "dirty")
+
+VERSION ?= $(shell echo "$$(git for-each-ref refs/tags/ --count=1 --sort=-version:refname --format='%(refname:short)' 2>/dev/null)-dev+$(REV)-$(GIT_TREE_STATE)" | sed 's/^v//')
+
 build:
-	go build -o kubectl-permissions -trimpath -ldflags "-X github.com/garethjevans/kubectl-permissions/pkg/version.Version=dev" cmd/kubectl-permissions.go
+	go build -o $(BINARY_NAME) -trimpath -ldflags "-X github.com/garethjevans/kubectl-permissions/pkg/version.Version=$(VERSION)" cmd/kubectl-permissions.go
 
 install: build
-	sudo cp -f kubectl-permissions /usr/local/bin
+	sudo cp -f $(BINARY_NAME) /usr/local/bin
 
 lint:
 	golangci-lint run