CI builds moved to docker (#17). GCC 5 and Clang 3.9 are no longer

included.

.travis.yml

@@ -3,76 +3,24 @@ language: generic
 dist: trusty
 sudo: required
 
+services:
+  - docker
+
 env:
   global:
-    - DEPENDENCY_DIR="${TRAVIS_BUILD_DIR}/dependencies"
-
-cache:
-  directories:
-    - ${DEPENDENCY_DIR}
+    - DOCKER_IMG="registry.gitlab.com/offa/ci-playground/dist-keygen"
 
 
 matrix:
     include:
-    - env: CXX=g++-7 CC=gcc-7
-      addons:
-        apt:
-          packages:
-            - g++-7
-            - valgrind
-          sources: &sources
-            - ubuntu-toolchain-r-test
-            - llvm-toolchain-trusty
-            - llvm-toolchain-trusty-3.9
-            - llvm-toolchain-trusty-4.0
-            - llvm-toolchain-trusty-5.0
-    - env: CXX=g++-6 CC=gcc-6
-      addons:
-        apt:
-          packages:
-            - g++-6
-            - valgrind
-          sources: *sources
-    - env: CXX=g++-5 CC=gcc-5
-      addons:
-        apt:
-          packages:
-            - g++-5
-            - valgrind
-          sources: *sources
-    - env: CXX=clang++-5.0 CC=clang-5.0
-      addons:
-        apt:
-          packages:
-            - clang-5.0
-            - libc++-dev
-            - libc++abi-dev
-            - valgrind
-          sources: *sources
-    - env: CXX=clang++-4.0 CC=clang-4.0
-      addons:
-        apt:
-          packages:
-            - clang-4.0
-            - libc++-dev
-            - libc++abi-dev
-            - valgrind
-          sources: *sources
-    - env: CXX=clang++-3.9 CC=clang-3.9
-      addons:
-        apt:
-          packages:
-            - clang-3.9
-            - libc++-dev
-            - libc++abi-dev
-            - valgrind
-          sources: *sources
+    - env: COMPILER=gcc-7
+    - env: COMPILER=gcc-6
+    - env: COMPILER=clang-5
+    - env: COMPILER=clang-4
 
 
-install:
-    - script/ci_install.sh
-    - script/ci_install_deps.sh
+before_install:
+  - docker pull ${DOCKER_IMG}/${COMPILER}:latest
 
 script:
-    - script/ci_build.sh
-
+  - docker run -v ${PWD}:/mnt -it ${DOCKER_IMG}/${COMPILER} /bin/bash -c "cd /mnt; script/ci_build.sh"