From 4344abc880a4217c540e5296a8ffae9264a756c7 Mon Sep 17 00:00:00 2001
From: Erwin Janssen <erwinjanssen@outlook.com>
Date: Thu, 8 Sep 2016 19:03:57 +0200
Subject: [PATCH] Travis: Add build on CentOS 7 using Docker.

There are now two environments, one where the variable DOCKER_BUILD is true and one where it is false. False means a normal build on the Travis build image, true means docker will be used to run a build on a CentOS 7 image. The setup of the CentOS 7 image is done in the Dockerfile in `ci/centos7`. It takes a clean CentOS 7 image and installs the required build utilities and dependencies for a minimal build.
---
 .travis.yml           | 14 ++++++++++++--
 ci/centos7/Dockerfile | 10 ++++++++++
 2 files changed, 22 insertions(+), 2 deletions(-)
 create mode 100644 ci/centos7/Dockerfile

diff --git a/.travis.yml b/.travis.yml
index 9ffa13023..e7f351ee5 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -11,6 +11,13 @@ addons:
     - freeglut3-dev
     - colorgcc
 
+services:
+- docker
+
+env:
+- DOCKER_BUILD=FALSE
+- DOCKER_BUILD=TRUE
+
 install:
 # Enable colored gcc output
 - export CC=colorgcc
@@ -22,10 +29,13 @@ install:
 - cmake --build .
 - sudo make install
 - sudo ldconfig
-
+- cd ${TRAVIS_BUILD_DIR}
+- if [ ${DOCKER_BUILD} == "TRUE" ] ; then docker build -t centos7-build-env ci/centos7/ ; fi
+    
 script:
 - cd ${TRAVIS_BUILD_DIR}
-- sudo ./ci/build_and_test.sh
+- if [ ${DOCKER_BUILD} == "FALSE" ] ; then sudo ./ci/build_and_test.sh ; fi
+- if [ ${DOCKER_BUILD} == "TRUE" ] ; then docker run --rm -v `pwd`:/graphviz -w /graphviz -i -t centos7-build-env bash "ci/build_and_test.sh" ; fi
 
 before_deploy:
 - export DEPLOYED_FILE=$(ls *.tar.gz)
diff --git a/ci/centos7/Dockerfile b/ci/centos7/Dockerfile
new file mode 100644
index 000000000..0e3ddbed0
--- /dev/null
+++ b/ci/centos7/Dockerfile
@@ -0,0 +1,10 @@
+FROM centos:7
+
+# Install Development tools
+RUN yum -y groupinstall 'Development Tools'
+
+# Instal autotools utilities
+RUN yum -y install libtool-ltdl-devel ghostscript swig ksh tcl
+
+# Install dependencies
+RUN yum -y install gd gd-devel qt-devel
-- 
2.40.0