Surpress the warnings about root user binaries not being on PATH.

.gitlab-ci.yml

@@ -14,8 +14,7 @@ before_script:
 #- python --version  # For debugging
 - export PIP_ROOT_USER_ACTION=ignore # surpress the warning
 - pip install --upgrade pip
-- pip install --user -r requirements.txt  # install dependencies from file
-
+- pip install --user --no-warn-script-location -r requirements.txt  # install dependencies from file
 PEP8:
   stage: linting
   script: