How to configure code-coverage in cypress when application is running in a docker container?

Question

My setup:

I have an application's source under /client which runs in a docker and mounts on /app/client inside the container and instrumenting it with babel-plugin-istanbul which seems to work fine:

However, when cypress with code-coverage plugin generates the coverage, it can't find the source code files, since /app exists only in the container:

/coverage/lcov-report/index.html:

Unable to lookup source: /app/client/src/.........

What I tried:

• copy the contents of /client to a directory under /cypress/app/client and /app/client (just in case :P)
• configure nyc to include the full path to /app

.nycrc.json:

{
 "include": ["C:/........./cypress/app/**/*.js"]
}```