Limit to one file *added*

  script:

    - echo "Changes Detected (if any):";

    - git diff --name-only $CI_COMMIT_SHA~ $CI_COMMIT_SHA || echo "No changes found";

    - FILES_ADDED=$(git diff --name-only --diff-filter=A HEAD~1 | wc -l)

    - |

      # Check if lab2.cpp exists

      if [ ! -f "lab2.cpp" ]; then

      fi

      # Check that only one file was checked in

      FILES_ADDED=$(git diff --name-only --diff-filter=A HEAD~1 | wc -l)

      if [ "FILES_ADDED" -ne 1 ]; then

        echo "Error: Only one file should be committed.";

        exit 1;