Update .gitlab-ci.yml file

.gitlab-ci.yml

@@ -14,8 +14,8 @@ test:ubuntu22.04:
     entrypoint: [ '/bin/bash', '-c', 'ln -snf /bin/bash /bin/sh && /bin/bash -c $0' ]
   before_script:
     - echo "Running ubuntu22.04 'before_script'..."
-    - echo $(ls /etc/apt/sources.list.d/)
-    # - apt-get update -y
+    - apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 871920D1991BC93C
+    - apt-get update -y
     - echo "... done running ubuntu22.04 'before_script'."
   script:
   - echo "Testing on Ubuntu 22.04..."