Update .gitlab-ci.yml file, troubleshoot workflow rules

workflow:

  rules:

    - { if: $CI_PIPELINE_SOURCE == "merge_request_event", when: never }

    - { changes: ['README.md'], when: never }

    - { when: always }

    #- changes:

    #    paths:

    #      - 'README.md'

    #  when: never

    - when: always

# https://docs.gitlab.com/ee/ci/yaml/workflow.html#merge-request-stuck-with-checking-pipeline-status-message

variables:

  GIT_STRATEGY: clone