imagemagick is in base image already

Dockerfile

@@ -1,10 +1,6 @@
 FROM cloudron/base:0.8.0
 MAINTAINER Johannes Zellner <johannes@cloudron.io>
 
-ENV DEBIAN_FRONTEND noninteractive
-
-RUN apt-get install -y imagemagick
-
 ENV PATH /usr/local/node-0.12.7/bin:$PATH
 
 EXPOSE 4567