gitlab-ci: Use the gcc:9 base image.

Use a versioned base image for jobs to reduce variance.

This version number will need to be bumped periodically.

Signed-off-by: Marvin Scholz <epirat07@gmail.com>

diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 065412e..e438d97 100644 (file)
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -2,7 +2,7 @@ default:
   tags:
     - docker
   # Image from https://hub.docker.com/_/gcc/ based on Debian
-  image: gcc
+  image: gcc:9
 
 autoconf:
   stage: build