Moved before install tasks into script

.travis.yml

@@ -60,23 +60,7 @@ services:
   - docker
 
 before_install:
-  - sudo apt-get update
-  # Latest Ansible install
-  - sudo apt-add-repository -y ppa:ansible/ansible
-  - sudo apt-get update
-  - sudo apt-get install ansible python-pip -y
-  - ansible --version
-  - sudo pip install docker-py==1.5.0
-  # Pull docker image or build it
-  - >
-    if [ -f tests/Dockerfile.${DISTRIBUTION}_${DIST_VERSION} ]
-    then
-        sudo docker build --rm=true --file=tests/Dockerfile.${DISTRIBUTION}_${DIST_VERSION}
-        --tag ${DISTRIBUTION}:${DIST_VERSION} tests
-    else
-        sudo docker pull ${DISTRIBUTION}:${DIST_VERSION}
-    fi
-  - sudo ln -s ${PWD} /etc/ansible/roles/greendayonfire.mongodb
+  - bash tests/scripts/before_install.sh
 
 script:
   # Test 1

tests/scripts/before_install.sh

@@ -0,0 +1,32 @@
+#!/usr/bin/env bash
+# -*- mode: sh; -*-
+
+# File: before_install.sh
+# Time-stamp: <2018-02-15 13:30:08>
+# Copyright (C) 2018 Sergei Antipov
+# Description:
+
+# set -o xtrace
+set -o nounset
+set -o errexit
+set -o pipefail
+
+sudo apt-get update
+# Latest Ansible install
+sudo apt-add-repository -y ppa:ansible/ansible
+sudo apt-get update
+sudo apt-get install ansible python-pip -y
+python --version
+ansible --version
+docker version
+sudo pip install docker-py
+# Pull docker image or build it
+if [ -f tests/Dockerfile.${DISTRIBUTION}_${DIST_VERSION} ]
+then
+    sudo docker build --rm=true --file=tests/Dockerfile.${DISTRIBUTION}_${DIST_VERSION}
+    --tag ${DISTRIBUTION}:${DIST_VERSION} tests
+else
+    sudo docker pull ${DISTRIBUTION}:${DIST_VERSION}
+fi
+
+sudo ln -s ${PWD} /etc/ansible/roles/greendayonfire.mongodb