CI: update used docker image to latest Ubuntu LTS

This will allow us to use newer toolchains and general tooling

Signed-off-by: Stefan Schmidt <stefan.schmidt@huawei.com>

.gitlab-ci.yml

@@ -4,7 +4,7 @@ default:
 stages:
   - build
 
-image: gcc
+image: ubuntu:22.04
 
 build:
   stage: build