use debian:jessie-backports as base image

Author: vimagick

Dockerfile.debian

@@ -2,7 +2,7 @@
 # Dockerfile for shadowsocks-libev
 #
 
-FROM debian:jessie
+FROM debian:jessie-backports
 MAINTAINER EasyPi Software Foundation
 
 ENV SS_VER 2.6.3
@@ -39,7 +39,6 @@ RUN set -xe \
                           zlib1g-dev \
     && curl -sSL ${SS_URL} | tar xz \
     && cd ${SS_DIR} \
-        && curl -sSL https://github.com/shadowsocks/shadowsocks-libev/raw/master/src/encrypt.c > src/encrypt.c \
         && curl -sSL https://github.com/shadowsocks/ipset/archive/shadowsocks.tar.gz | tar xz --strip 1 -C libipset \
         && curl -sSL https://github.com/shadowsocks/libcork/archive/shadowsocks.tar.gz | tar xz --strip 1 -C libcork \
         && ./autogen.sh \

Dockerfile.debian.arm

@@ -39,7 +39,6 @@ RUN set -xe \
                           zlib1g-dev \
     && curl -sSL ${SS_URL} | tar xz \
     && cd ${SS_DIR} \
-        && curl -sSL https://github.com/shadowsocks/shadowsocks-libev/raw/master/src/encrypt.c > src/encrypt.c \
         && curl -sSL https://github.com/shadowsocks/ipset/archive/shadowsocks.tar.gz | tar xz --strip 1 -C libipset \
         && curl -sSL https://github.com/shadowsocks/libcork/archive/shadowsocks.tar.gz | tar xz --strip 1 -C libcork \
         && ./autogen.sh \