update to Rocky Linux 8.5

.gitlab-ci.yml

 default:
   tags: [ public-docker ]
-  image: $CI_REGISTRY/easybuild-docker/easybuild-docker/centos8-eb-test:latest
+  image: $CI_REGISTRY/easybuild-docker/easybuild-docker/rocky8-eb-test:latest
 
 workflow:
   rules:
@@ -15,6 +15,7 @@ workflow:
 
 check_style:
   script:
+    - ml --version && which -a eb && eb --version && eb --show-system-info
     - export SYSTEMNAME="juwelsbooster" # Make this the default for packages like NVHPC
     - export EASYBUILD_INCLUDE_EASYBLOCKS="$CI_PROJECT_DIR/Custom_EasyBlocks/*.py,$CI_PROJECT_DIR/Custom_EasyBlocks/generic/*.py"
     - export EASYBUILD_INCLUDE_MODULE_NAMING_SCHEMES="$CI_PROJECT_DIR/Custom_MNS/*.py"