*: properly compile version into docker images

Makefile

@@ -31,6 +31,10 @@ bin/dex: FORCE generated
 bin/example-app: FORCE
 	@go install -v -ldflags $(LD_FLAGS) $(REPO_PATH)/cmd/example-app
 
+.PHONY: release-binary
+release-binary:
+	@go build -o _output/bin/dex -v -ldflags $(LD_FLAGS) $(REPO_PATH)/cmd/dex
+
 .PHONY: generated
 generated: server/templates_default.go
 
@@ -67,7 +71,7 @@ _output/images/library-alpine-3.4.aci:
 	@docker2aci docker://alpine:3.4
 	@mv library-alpine-3.4.aci _output/images/library-alpine-3.4.aci
 
-_output/images/dex.aci: _output/bin/dex _output/images/library-alpine-3.4.aci
+_output/images/dex.aci: clean-release _output/bin/dex _output/images/library-alpine-3.4.aci
 	# Using acbuild to build a application container image.
 	@sudo ./scripts/build-aci ./_output/images/library-alpine-3.4.aci
 	@sudo chown $(user):$(group) _output/images/dex.aci
@@ -76,8 +80,8 @@ _output/images/dex.aci: _output/bin/dex _output/images/library-alpine-3.4.aci
 aci: _output/images/dex.aci
 
 .PHONY: docker-image
-docker-image: _output/bin/dex
-	@docker build -t $(DOCKER_IMAGE) .
+docker-image: clean-release _output/bin/dex
+	@sudo docker build -t $(DOCKER_IMAGE) .
 
 .PHONY: grpc
 grpc: api/api.pb.go
@@ -91,8 +95,11 @@ bin/protoc: scripts/get-protoc
 bin/protoc-gen-go:
 	@go install -v $(REPO_PATH)/vendor/github.com/golang/protobuf/protoc-gen-go
 
-clean:
+clean: clean-release
 	@rm -rf bin/
+
+.PHONY: clean-release
+clean-release:
 	@rm -rf _output/
 
 testall: testrace vet fmt lint

cmd/dex/version.go

@@ -13,7 +13,7 @@ func commandVersion() *cobra.Command {
 		Use:   "version",
 		Short: "Print the version and exit",
 		Run: func(cmd *cobra.Command, args []string) {
-			fmt.Printf(`dex Version:%s
+			fmt.Printf(`dex Version: %s
 Go Version: %s
 Go OS/ARCH: %s %s
 `, version.Version, runtime.Version(), runtime.GOOS, runtime.GOARCH)

scripts/git-version

@@ -1,4 +1,5 @@
-#!/bin/bash -e
+#!/bin/sh -e
+# Since this script will be run in a rkt container, use "/bin/sh" instead of "/bin/bash"
 
 # parse the current git commit hash
 COMMIT=`git rev-parse HEAD`
@@ -18,4 +19,4 @@ if [ -n "$(git diff --shortstat 2> /dev/null | tail -n1)" ]; then
     VERSION="${VERSION}-dirty"
 fi
 
-echo $VERSION
+echo $VERSION

scripts/rkt-build

@@ -10,4 +10,4 @@ sudo rkt run \
     --insecure-options=image \
     docker://golang:1.7.1-alpine \
     --exec=/bin/sh -- -x -c \
-	'apk add --no-cache --update alpine-sdk && go install -v github.com/coreos/dex/cmd/dex && cp /go/bin/dex /go/src/github.com/coreos/dex/_output/bin'
+    'apk add --no-cache --update alpine-sdk && cd /go/src/github.com/coreos/dex && make release-binary'