Can't attach extra volumes to docker-runner

[garzdin]

Why is there no ability to define and attach extra volumes to the docker-runner deployment?

I want to use the DOCKER_RUNNER_ENV_FILE environment variable to inject environment variables into the pipelines.

I'd like to define things like a Docker registry mirror, custom DNS servers, etc.

I see there are appropriate fields in the values schema, but they're not used in the docker-runner deployment.

Edit: I want to use a file, rather than the available DOCKER_RUNNER_ENV environment variable, because in fields like the Docker registry mirror URL there are colons, which are not parsed correctly when provided through this variable.