first try

.travis.yml

@@ -1,9 +1,9 @@
+sudo: required
+dist: trusty
 language: php
 php:
-    - 5.5
     - 5.6
     - 7
-    #- hhvm
 env:
     global:
         - CORE_BRANCH=stable8.2
@@ -15,23 +15,21 @@ matrix:
         - php: hhvm
         - env: DB=pgsql CORE_BRANCH=master
     include:
-        - php: 5.5
+        - php: 5.6
           env: DB=sqlite
-        - php: 5.5
+        - php: 5.6
           env: DB=mysql
         # master branch
-        - php: 5.5
+        - php: 5.6
           env: DB=pgsql CORE_BRANCH=master
     fast_finish: true
 
 before_install:
-    - "export DISPLAY=:99.0"
-    - "sh -e /etc/init.d/xvfb start"
-
-install:
-    # install dependencies
+    - env
+    - export DISPLAY=:99.0
+    - sh -e /etc/init.d/xvfb start
     - sudo apt-get update
-    - sudo apt-get install -o DPkg::Options::="--force-confold" -y libxml2 libxml2-dev libxml2-utils python3-jinja2 python3-setuptools apache2 libapache2-mod-fastcgi firefox curl
+    - sudo apt-get install python3-setuptools apache2 libapache2-mod-fastcgi
     - sudo easy_install3 requests ocdev
     - nvm install 5.6
     - npm install -g npm@latest
@@ -82,3 +80,4 @@ script:
 
 addons:
     postgresql: "9.3"
+    firefox: "44"