Merge pull request #25 from willejs/docker-image

Change to multi stage build dockerfile

Dockerfile

@@ -1,21 +1,28 @@
 FROM golang:1.9-alpine
 
-ENV PORT_NUM 9200
 WORKDIR /go/src/github.com/abutaha/aws-es-proxy
 COPY . .
 
-#RUN go-wrapper download
-#RUN go-wrapper install
-
 RUN apk add --update bash curl git && \
     rm /var/cache/apk/*
 
 RUN mkdir -p $$GOPATH/bin && \
     curl https://glide.sh/get | sh
 
 RUN glide install
-RUN go build -o aws-es-proxy
+RUN CGO_ENABLED=0 GOOS=linux go build -o aws-es-proxy
+
 
+FROM alpine:3.7
+LABEL name="aws-es-proxy" \
+      version="latest"
+
+RUN apk --no-cache add ca-certificates
+WORKDIR /home/
+COPY --from=0 /go/src/github.com/abutaha/aws-es-proxy/aws-es-proxy /usr/local/bin/
+
+ENV PORT_NUM 9200
 EXPOSE ${PORT_NUM}
 
-CMD ["./aws-es-proxy", "-h"]
+ENTRYPOINT ["aws-es-proxy"] 
+CMD ["-h"]