Image build is optimized.

.gitlab-ci.yml

@@ -30,10 +30,6 @@ before_script:
   - docker network prune -f || true
   - docker image prune -a -f || true
   - docker builder prune -f || true
-  - sudo apt-get clean
-  - sudo rm -rf /var/lib/apt/lists/*
-  - sudo rm -rf /tmp/*
-  - sudo journalctl --vacuum-time=1s
 
 build:
   stage: build