multi-stage docker file

Signed-off-by: kuba-- <[email protected]>

Author: kuba--

Dockerfile

@@ -1,6 +1,20 @@
+#================================
+# Stage 1: Build Gitbase
+#================================
+FROM golang:1.11-alpine as gitbase-build
+
+ENV GITBASE_REPO=github.com/src-d/gitbase
+ENV GITBASE_PATH=$GOPATH/src/$GITBASE_REPO
+
+COPY . $GITBASE_PATH
+WORKDIR $GITBASE_PATH
+RUN go build -ldflags="-s -w" -o /bin/gitbase ./cmd/gitbase
+
+#=================================
+# Stage 2: Start Gitbase Server
+#=================================
 FROM alpine:3.8
 
-COPY build/bin/gitbase /bin
 RUN mkdir -p /opt/repos
 
 ENV GITBASE_USER=root
@@ -11,12 +25,12 @@ EXPOSE 3306
 ENV TINI_VERSION v0.18.0
 ADD https://github.com/krallin/tini/releases/download/${TINI_VERSION}/tini-static-amd64 /tini
 RUN chmod +x /tini
-
-RUN apk --no-cache add libxml2 git oniguruma libc6-compat
-
 ENTRYPOINT ["/tini", "--"]
 
-CMD gitbase server -v \
+# copy build artifacts
+COPY --from=gitbase-build /bin/gitbase /bin/gitbase
+
+CMD /bin/gitbase server -v \
     --host=0.0.0.0 \
     --port=3306 \
     --user="$GITBASE_USER" \