*: modify Dockerfile and Makefile to build a static binary with version of gitbase

Signed-off-by: Manuel Carmona <[email protected]>

Author: mcarmonaa

Dockerfile

@@ -8,10 +8,7 @@ RUN apk add --update libxml2-dev git make bash gcc g++ curl oniguruma-dev
 RUN go get github.com/golang/dep/...
 RUN dep ensure
 RUN cd vendor/gopkg.in/bblfsh/client-go.v2 && make dependencies
-RUN VERSION=$(git describe --exact-match --tags 2>/dev/null || \
-    echo dev-$(git rev-parse --short HEAD)$(test -n "`git status --porcelain`" && echo "-dirty" || true)); \
-    go install -v -tags oniguruma -ldflags "-linkmode external -extldflags '-static -lz' -X main.version=$VERSION" \
-    github.com/src-d/gitbase/...
+RUN make static-build
 
 FROM alpine:3.8
 

Makefile

@@ -34,3 +34,10 @@ static-package:
 	cd build && \
 	tar czvf $${PACKAGE_NAME}.tar.gz $${PACKAGE_NAME} && \
 	docker rm gitbase-temp
+
+# target used in the Dockerfile to build the static binary
+static-build: VERSION = $(shell git describe --exact-match --tags 2>/dev/null || dev-$(git rev-parse --short HEAD)$(test -n "`git status --porcelain`" && echo "-dirty" || true))
+static-build: LD_FLAGS += -linkmode external -extldflags '-static -lz'
+static-build: GO_BUILD_ARGS += -tags oniguruma
+static-build:
+	go install -v $(GO_BUILD_ARGS) github.com/src-d/gitbase/...