Set up travis to run our functional tests agains the built container

.travis.yml

@@ -1,15 +1,24 @@
 sudo: required
+language: python
 
 python:
-  - "3.5"
+  - "3.4"
 
 services:
     - docker
 
 before_install:
+    - sudo apt-get update
+    - sudo apt-get install xvfb firefox
+    - "export DISPLAY=:99.0"
+    - "sh -e /etc/init.d/xvfb start"
     - docker pull opendataservices/resource-projects-etl:${TRAVIS_TAG:-$TRAVIS_BRANCH}
     - docker build -t opendataservices/resource-projects-etl .
-    - docker run -p 127.0.0.1:8000:80 opendataservices/resource-projects-etl
+#    https://github.com/travis-ci/travis-ci/issues/4778
+    - sudo service docker restart ; sleep 10
+    - docker run -p 127.0.0.1:8000:80 -d opendataservices/resource-projects-etl
+
+install:
     - pip install -r requirements_test.txt
 
 script: