[Update] 修改docker file

Dockerfile

 FROM golang:1.12-alpine as stage-build
 LABEL stage=stage-build
-WORKDIR /go/src/cocogo
+WORKDIR /go/src/koko
 RUN apk update && apk add git
 ARG https_proxy
 ARG http_proxy
@@ -8,14 +8,14 @@ ENV https_proxy=$https_proxy
 ENV http_proxy=$http_proxy
 RUN go get -u github.com/golang/dep/cmd/dep
 COPY . .
-RUN dep ensure -vendor-only && cd cmd && go build coco.go
+RUN dep ensure -vendor-only && cd cmd && go build koko.go
 
 FROM alpine
 WORKDIR /opt/coco/
-COPY --from=stage-build /go/src/cocogo/cmd/coco .
-COPY --from=stage-build /go/src/cocogo/cmd/locale .
-COPY --from=stage-build /go/src/cocogo/cmd/static .
-COPY --from=stage-build /go/src/cocogo/cmd/templates .
+COPY --from=stage-build /go/src/koko/cmd/koko .
+COPY --from=stage-build /go/src/koko/cmd/locale .
+COPY --from=stage-build /go/src/koko/cmd/static .
+COPY --from=stage-build /go/src/koko/cmd/templates .
 RUN  echo > config.yml
 EXPOSE 2222
-CMD ["./coco"]
+CMD ["./koko"]