Clean up Dockerfile

- Alphabetize dependencies so it will be easier to maintain in the long
run.
- Chain commands so less layers are used.

Change-Id: I068df08af662b8b6cd823f07d55c3f5294242428
Signed-off-by: Chuck Short <charles.short@ericsson.com>
diff --git a/docker/Dockerfile b/docker/Dockerfile
index 19e5c7d..871e849 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -9,10 +9,12 @@
 # Install Python Pip, Robot framework, firefox, lighttpd web server, wget
 RUN apt-get update && \
     apt-get --assume-yes install python=2.7.11-1 && \
-    apt-get --assume-yes install python-pip dbus xvfb lighttpd wget git net-tools dnsutils unzip && \
-    apt-get --assume-yes install libxss1 libappindicator1 libindicator7 build-essential libssl-dev libffi-dev python-dev && \
+    apt-get --assume-yes install build-essential dbus dnsutils git libappindicator1 \
+				 libffi-dev libindicator7 libssl-dev libxss1 \
+				 lighttpd net-tools python-dev python-pip unzip \
+				 wget xvfb && \
     pip install --upgrade pip && \
-    pip install robotframework  && \
+    pip install robotframework && \
     python --version
 
 # Install chrome
@@ -24,15 +26,14 @@
 # Copy the robot code
 COPY / /var/opt/OpenECOMP_ETE/
 COPY lighttpd.conf /etc/lighttpd/lighttpd.conf
-RUN chmod 777 /var/opt/OpenECOMP_ETE/setup.sh
-RUN chmod 777 /var/opt/OpenECOMP_ETE/runTags.sh
-RUN chmod 777 /var/opt/OpenECOMP_ETE/dnstraffic.sh
-RUN chmod 777 /var/opt/OpenECOMP_ETE/runSoak.sh
-RUN chmod 777 /var/opt/OpenECOMP_ETE/runEteTag.sh
+RUN chmod 777 /var/opt/OpenECOMP_ETE/setup.sh && \
+    chmod 777 /var/opt/OpenECOMP_ETE/runTags.sh && \
+    chmod 777 /var/opt/OpenECOMP_ETE/dnstraffic.sh && \
+    chmod 777 /var/opt/OpenECOMP_ETE/runSoak.sh && \
+    chmod 777 /var/opt/OpenECOMP_ETE/runEteTag.sh
 
 # Update the ssh library so that it will run properly in the docker env
-RUN cd /var/opt/OpenECOMP_ETE && ./setup.sh
-RUN apt-get clean
+RUN cd /var/opt/OpenECOMP_ETE && ./setup.sh && apt-get clean
 
 CMD ["lighttpd", "-D", "-f",  "/etc/lighttpd/lighttpd.conf"]