fix docker build

Dockerfile

@@ -1,15 +1,18 @@
-FROM cmfatih/phantomjs
+FROM python:2.7
 MAINTAINER binux <[email protected]>
 
-# install python
-RUN apt-get update && \
-        apt-get install -y python python-dev python-distribute python-pip && \
-        apt-get install -y libcurl4-openssl-dev libxml2-dev libxslt1-dev python-lxml python-mysqldb libpq-dev
+# install phantomjs
+RUN mkdir -p /opt/phantomjs \
+        && cd /opt/phantomjs \
+        && wget -O phantomjs.tar.bz2 https://bitbucket.org/ariya/phantomjs/downloads/phantomjs-2.1.1-linux-x86_64.tar.bz2 \
+        && tar xavf phantomjs.tar.bz2 --strip-components 1 \
+        && ln -s /opt/phantomjs/bin/phantomjs /usr/local/bin/phantomjs \
+        && rm phantomjs.tar.bz2
+
 
 # install requirements
-RUN pip install -U pip setuptools
 RUN pip install --egg 'https://dev.mysql.com/get/Downloads/Connector-Python/mysql-connector-python-2.1.5.zip#md5=ce4a24cb1746c1c8f6189a97087f21c1'
-ADD requirements.txt /opt/pyspider/requirements.txt
+COPY requirements.txt /opt/pyspider/requirements.txt
 RUN pip install -r /opt/pyspider/requirements.txt
 
 # add all repo