Volume not mounted in Docker container with gitlab-runner

I try to mount a directory from the OS to the gitlab-runner Docker container and don't see the mounted directory in the filesystem in the container. I enabled debug logging in the config.toml file, restarted container with gitlab-runner and see the correct values in the volume section in the log of gitlablab-runner container, but there is no folder in the container file system:

      volumes:
      - /cache
      - /home/adm2008/myfold:/www

I need help to understand why the folder from the OS is not mounted in Docker container.

Here's the content of my /srv/gitlab-runner/config/config.toml file:

concurrent = 1
check_interval = 0

[session_server]
  session_timeout = 1800

[[runners]]
  name = "clean runner"
  url = "https://gitlab.com/"
  token = "nBxn1qhRmHzKsskki-Jz"
  executor = "docker"
  [runners.custom_build_dir]
  [runners.cache]
    [runners.cache.s3]
    [runners.cache.gcs]
    [runners.cache.azure]
  [runners.docker]
    tls_verify = false
    image = "ruby:2.7"
    privileged = false
    disable_entrypoint_overwrite = false
    oom_kill_disable = false
    disable_cache = false
    volumes = ["/cache", "/home/adm2008/myfold:/www"]
    shm_size = 0