Merge pull request #4 from stephen-fox/use-ubuntu-16.04-base-image

Now use Ubuntu 16.04 as base image.

image/Dockerfile

@@ -1,32 +1,18 @@
-FROM ubuntu:trusty
-
-RUN apt-get update; apt-get clean
-
-# Add a user for running applications.
-RUN useradd apps
-RUN mkdir -p /home/apps && chown apps:apps /home/apps
-
-# Install x11vnc.
-RUN apt-get install -y x11vnc
-
-# Install xvfb.
-RUN apt-get install -y xvfb
-
-# Install fluxbox.
-RUN apt-get install -y fluxbox
-
-# Install wget.
-RUN apt-get install -y wget
-
-# Install wmctrl.
-RUN apt-get install -y wmctrl
-
-# Set the Chrome repo.
-RUN wget -q -O - https://dl-ssl.google.com/linux/linux_signing_key.pub | apt-key add - \
-    && echo "deb http://dl.google.com/linux/chrome/deb/ stable main" >> /etc/apt/sources.list.d/google.list
-
-# Install Chrome.
-RUN apt-get update && apt-get -y install google-chrome-stable
+FROM ubuntu:16.04
+
+RUN apt-get update && apt-get clean && apt-get install -y \
+    x11vnc \
+    xvfb \
+    fluxbox \
+    wmctrl \
+    wget \
+    && wget -q -O - https://dl-ssl.google.com/linux/linux_signing_key.pub | apt-key add - \
+    && echo "deb http://dl.google.com/linux/chrome/deb/ stable main" >> /etc/apt/sources.list.d/google.list \
+    && apt-get update && apt-get -y install google-chrome-stable
+
+RUN useradd apps \
+    && mkdir -p /home/apps \
+    && chown -v -R apps:apps /home/apps
 
 COPY bootstrap.sh /