diff --git a/Dockerfile b/Dockerfile
index 3841720..2f06ea5 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,19 +1,7 @@
 FROM golang:latest
 MAINTAINER Liang Ding <dl88250@gmail.com>
 
-RUN go get github.com/88250/ide_stub
-RUN go get github.com/nsf/gocode
-RUN go get github.com/bradfitz/goimports
-
-ADD . /go/src/github.com/b3log/wide
-WORKDIR /go/src/github.com/b3log/wide
-RUN go get
-RUN go build
-
-RUN cp -r . /root/wide
-WORKDIR /root/wide
-RUN rm -rf /go/pkg /go/src
-RUN mv ./hello /go/src/hello
+RUN ./docker.sh
 
 ENV GOROOT /usr/src/go
 
diff --git a/docker.sh b/docker.sh
new file mode 100644
index 0000000..e4783ab
--- /dev/null
+++ b/docker.sh
@@ -0,0 +1,17 @@
+#!/bin/bash
+
+# Make docker image.
+
+go get github.com/88250/ide_stub
+go get github.com/nsf/gocode
+go get github.com/bradfitz/goimports
+
+cp -r . /go/src/github.com/b3log/wide
+cd /go/src/github.com/b3log/wide
+go get
+go build
+cp -r . /root/wide
+
+cd /root/wide
+rm -rf /go/pkg /go/src
+mv ./hello /go/src/hello