Update .gitlab-ci.yml file

.gitlab-ci.yml

-image: docker:20.10.16
+image: docker:20.10.16  # Docker image to run your jobs
 
 stages:
   - full_test
 
 variables:
-  DOCKER_HOST: unix:///var/run/docker.sock
-  DOCKER_TLS_CERTDIR: ""
+  DOCKER_TLS_CERTDIR: ""  # Disable TLS for Docker
   EUSER: "appuser"
   EGID: "999"
   MOODLE_WWWROOT: "http://host.docker.internal:8080"  # Use host.docker.internal for WSL
@@ -60,4 +59,4 @@ run_full_automation:
     - ./test-moodle.sh
   after_script:
     - echo "Tearing down Docker environment..."
-    - docker-compose down -v
+    - docker-compose down -v
\ No newline at end of file