Remove ubuntu-tw sources and useless package.

Author: Colin

Dockerfile

@@ -4,14 +4,6 @@ MAINTAINER Doro Wu <fcwu.tw@gmail.com>
 ENV DEBIAN_FRONTEND noninteractive
 ENV HOME /root
 
-# setup our Ubuntu sources (ADD breaks caching)
-RUN echo "deb http://tw.archive.ubuntu.com/ubuntu/ trusty main\n\
-deb http://tw.archive.ubuntu.com/ubuntu/ trusty multiverse\n\
-deb http://tw.archive.ubuntu.com/ubuntu/ trusty universe\n\
-deb http://tw.archive.ubuntu.com/ubuntu/ trusty restricted\n\
-deb http://ppa.launchpad.net/chris-lea/node.js/ubuntu trusty main\n\
-"> /etc/apt/sources.list
-
 # no Upstart or DBus
 # https://github.com/dotcloud/docker/issues/1724#issuecomment-26294856
 RUN apt-mark hold initscripts udev plymouth mountall
@@ -23,14 +15,12 @@ RUN apt-get update \
  net-tools \
  lxde x11vnc xvfb \
  gtk2-engines-murrine ttf-ubuntu-font-family \
- nodejs \
  libreoffice firefox \
  && apt-get autoclean \
  && apt-get autoremove \
  && rm -rf /var/lib/apt/lists/*
 
 ADD noVNC /noVNC/
-
 ADD startup.sh /
 ADD supervisord.conf /
 EXPOSE 6080