diff --git a/judge/Dockerfile b/judge/Dockerfile
index c2ca1b1..7718e06 100644
--- a/judge/Dockerfile
+++ b/judge/Dockerfile
@@ -3,6 +3,8 @@ MAINTAINER virusdefender<qduliyang@outlook.com>
 RUN mkdir /var/install/
 WORKDIR /var/install/
 ENV DEBIAN_FRONTEND noninteractive
+RUN rm /etc/apt/sources.list
+COPY sources.list /etc/apt/
 RUN apt-get update
 RUN apt-get -y install software-properties-common python-software-properties
 RUN add-apt-repository -y ppa:webupd8team/java
diff --git a/judge/sources.list b/judge/sources.list
new file mode 100644
index 0000000..3f18a0f
--- /dev/null
+++ b/judge/sources.list
@@ -0,0 +1,10 @@
+deb http://mirrors.aliyun.com/ubuntu/ trusty main restricted universe multiverse
+deb http://mirrors.aliyun.com/ubuntu/ trusty-security main restricted universe multiverse
+deb http://mirrors.aliyun.com/ubuntu/ trusty-updates main restricted universe multiverse
+deb http://mirrors.aliyun.com/ubuntu/ trusty-proposed main restricted universe multiverse
+deb http://mirrors.aliyun.com/ubuntu/ trusty-backports main restricted universe multiverse
+deb-src http://mirrors.aliyun.com/ubuntu/ trusty main restricted universe multiverse
+deb-src http://mirrors.aliyun.com/ubuntu/ trusty-security main restricted universe multiverse
+deb-src http://mirrors.aliyun.com/ubuntu/ trusty-updates main restricted universe multiverse
+deb-src http://mirrors.aliyun.com/ubuntu/ trusty-proposed main restricted universe multiverse
+deb-src http://mirrors.aliyun.com/ubuntu/ trusty-backports main restricted universe multiverse
\ No newline at end of file