Update Dockerfile

rework base image for use with gitlabci.

Author: rtprio

Dockerfile

@@ -1,7 +1,13 @@
-FROM mkenney/npm:latest
+FROM centos:latest
 MAINTAINER Elliot Schlegelmilch <elliot@schlegelmilch.org>
 
+RUN yum install -y wget epel-release bzip2 && yum install -y npm fontconfig
+RUN mkdir -p /usr/local/bin
+
+RUN cd /tmp; wget https://bitbucket.org/ariya/phantomjs/downloads/phantomjs-2.1.1-linux-x86_64.tar.bz2 && \
+   bunzip2 phantomjs-2.1.1-linux-x86_64.tar.bz2 && \
+   tar -x -f phantomjs-2.1.1-linux-x86_64.tar; mv  phantomjs-2.1.1-linux-x86_64/bin/phantomjs /usr/bin/ && rm -Rf /tmp/phantom*
+
 RUN npm install -g uncss
 
-ENTRYPOINT []
-CMD []
+CMD [ "/bin/sh" ]