Force stop postgres

.travis.yml

@@ -14,6 +14,10 @@ before_install:
   - curl -L https://github.com/docker/compose/releases/download/${DOCKER_COMPOSE_VERSION}/docker-compose-`uname -s`-`uname -m` > docker-compose
   - chmod +x docker-compose
   - sudo mv docker-compose /usr/local/bin
+  # Shut down postgres because it blocks our db container's port map to :5432
+  - sudo service postgresql stop
+  # Wait for it to stop
+  - while sudo lsof -Pi :5432 -sTCP:LISTEN -t; do sleep 1; done
   - docker-compose --version
   - docker ps
   # Needed to deploy pull request and releases