Context:

I have a situation where I want to run Testcafe in docker in a remote environment which requires Testcafe to be run through its CLI, I want to use the .testcaferc file that I also use to test locally so I don't have to manage 2 sets of config. But need to override specific properties to get it working in this environment.

Notably chrome locally and chromium:headless in the pipeline.

The problem:

I can't figure out how to override the browsers for the CLI tool - I can override every other key just fine, but the browser to run on doesn't get overridden

Example CLI command:

testcafe \
            chromium:headless \
            --ports 1337,1338  \
            --disable-gpu-sandbox \
            --disable-gpu \
            --no-sandbox \
            --disable-dev-shm-usage \
            ...

Example .testcaferc.json:

{
   "browsers": ["chrome"],
   ...
}

Expected:

Runs only chromium:headless

Actual:

Fails trying to run chrome