diff --git a/Dockerfile b/Dockerfile
index a59b58b..cddbbb5 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -2,7 +2,7 @@ FROM golang:cross
 MAINTAINER Liang Ding <dl88250@gmail.com>
 
 ADD . /wide/gogogo/src/github.com/b3log/wide
-RUN unzip /wide/gogogo/src/github.com/b3log/wide/golang.org.zip -d /wide/gogogo/src/
+RUN tar zxf /wide/gogogo/src/github.com/b3log/wide/golang.org.tar.gz /wide/gogogo/src/
 
 RUN useradd wide && useradd runner
 
diff --git a/golang.org.tar.gz b/golang.org.tar.gz
new file mode 100644
index 0000000..24e6e0e
Binary files /dev/null and b/golang.org.tar.gz differ
diff --git a/golang.org.zip b/golang.org.zip
deleted file mode 100644
index cba579a..0000000
Binary files a/golang.org.zip and /dev/null differ