ci: update gitlab ubuntu image

* .gitlab-ci.yml (image): Replace "ubuntu:17.10" with "ubuntu:18.04".

diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index b283cd63b0c5751a08aa84dcca1bd636ab7b278c..9c2c50caf8eb77c4e033eff57b749f809e51e6ae 100644 (file)
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -1,4 +1,4 @@
-image: "ubuntu:17.10"
+image: "ubuntu:18.04"
 
 before_script:
   - ci/install-dependencies.sh