Gitlab-runner [daemon] ssh config file for "ssh executor"


I have a gitlab-runner running as a systemd service on linux box - with multiple ssh executors setup for reach remote machine [using config at /etc/gitlab-runner/config.toml]

And I need to add another ssh executor to a machine that is accessible using ssh ProxyCommand configuration This usually goes into ~/.ssh/config file

Is there a way to specify this config file to the gitlab-runner in [runners.ssh] section? Or is there a default location for this file that gitlab-runner uses?

$ gitlab-runner --version
Version: 12.10.2
Git revision: c5874a4b
Git branch: 12-10-stable
GO version: go1.13.8
Built: 2020-05-07T23:24:08+0000
OS/Arch: linux/amd64