No need for an unused EXPORT port or an ununsed mkdir

Dockerfile

@@ -5,8 +5,6 @@ FROM docker.creativelive.com:5000/baseimage/cl-baseimage:latest
 RUN apt-get update
 RUN apt-get install -y imagemagick build-essential
 
-RUN mkdir -p /tmp/cache/mkimage-server
-
 ADD package.json /tmp/package.json
 RUN cd /tmp && npm install
 RUN mkdir -p /var/node/mkimage-server && cp -a /tmp/node_modules /var/node/mkimage-server
@@ -17,6 +15,3 @@ ADD . /var/node/mkimage-server
 
 # define default command
 CMD node app.js
-
-# expose ports
-EXPOSE 80