[vala/wip/ci: 8/10] ci: Add ubuntu lts 16.04 run with gcc

[Rico Tzschichholz <ricotz src gnome org>]

commit 2f893d7f7bccbb3c25790e4abe48800317f564d9
Author: Rico Tzschichholz <ricotz ubuntu com>
Date:   Sun Feb 10 13:55:46 2019 +0100

    ci: Add ubuntu lts 16.04 run with gcc

 .gitlab-ci.yml | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)
---
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 38bea6368..2fec08e4b 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -39,6 +39,24 @@ ubuntu-clang-x86_64:
     - make -j4 bootstrap
     - make -j4 check
 
+ubuntu-lts-16-gcc-x86_64:
+  stage: build
+  image: ubuntu:16.04
+  except:
+    - tags
+  variables:
+    DEBIAN_FRONTEND: noninteractive
+  before_script:
+    - apt update
+    - apt install -y automake autoconf-archive libtool bison dbus flex git libglib2.0-dev libgraphviz-dev 
libgirepository1.0-dev lcov xsltproc make valac
+  script:
+    - git fetch --tags
+    - ./autogen.sh
+    - make -j4
+    - make -j4 bootstrap
+    - make -j4 check
+  allow_failure: true
+
 pages:
   stage: deploy
   script: