Update Dockerfile

Dockerfile

@@ -1,4 +1,4 @@
-FROM golang:1.9
+FROM golang:1.8.1-alpine
 
 
 RUN apk add --update bash git make gcc
@@ -9,12 +9,10 @@ ADD . /go/src/github.com/lifei6671/mindoc
 WORKDIR /go/src/github.com/lifei6671/mindoc
 
 RUN chmod +x start.sh
-#RUN go get -d ./...
-#RUN go get github.com/mitchellh/gox
-#RUN go gox -os "windows linux darwin" -arch amd64
-RUN go get -d ./... && \
-    go get github.com/mitchellh/gox && \
-    gox -os "linux" -arch amd64
-
 
+RUN go get -d ./... && \
+    go get github.com/mitchellh/gox
+RUN gox -h
+RUN gox -os "windows linux darwin" -arch amd64
+    
 CMD ["./start.sh"]