Merge pull request #136 from frederik-elwert/update_dockerfile

Change Dockerfile to make less calls to apt-get

Dockerfile

@@ -4,23 +4,25 @@ MAINTAINER Andrew Woods <[email protected]>
 
 # Install apt dependencies
 RUN apt-get update -y
-RUN apt-get install -y build-essential
-RUN apt-get install -y software-properties-common
-RUN apt-get install -y git
-RUN apt-get install -y ghostscript
-RUN apt-get install -y imagemagick
-RUN apt-get install -y libvips
+RUN apt-get install -y --no-install-recommends \
+ build-essential \
+ software-properties-common \
+ git \
+ ghostscript \
+ imagemagick \
+ libvips \
+ locales \
+ && rm -rf /var/lib/apt/lists/*
 
 # Add imagemagick PDF fix
 RUN sed -i '/disable ghostscript format types/,+6d' /etc/ImageMagick-6/policy.xml
 
-# Install locales
-RUN apt-get update && apt-get install -y locales && rm -rf /var/lib/apt/lists/* \
- && localedef -i en_US -c -f UTF-8 -A /usr/share/locale/locale.alias en_US.UTF-8
+# Set up locales
+RUN localedef -i en_US -c -f UTF-8 -A /usr/share/locale/locale.alias en_US.UTF-8
 ENV LANG en_US.utf8
 
 RUN mkdir /wax
-COPY Gemfile* *.gemspec ./wax
+COPY Gemfile* *.gemspec /wax/
 WORKDIR /wax
 RUN bundle