How to set a custom DNS server? and in general how to change the runner config

[lefuturiste]

Hello, I have a job with some command in the script: that make use of network hosts that can only be resolved with a specific DNS server.
In normal time I have no issues resolving these specifics hosts during docker build or during docker run because I have modified my /etc/docker/daemon.json to make it my default DNS server.
With gitlab-ci-local when I launch my job the program inside the script report a [Errno -2] Name or service not known and fail.
So how can I configure this.
I tried to look and there is no obvious way to change that.
May be there is a way to append some custom args to the dockerCmd variable used in src/job.ts ?

[firecow]

How would you go about doing this on a "remote" runner?

Can you provide an example, we can use to create a feature request from?