init cli: shouldRunDev should be configurable by an arg

[fastfrwrd]

Is your feature request related to a problem? Please describe.

We're using the storybook CLI as a spawned process from another CLI which helps scaffold projects. Since we're taking steps after initializing Storybook in our directory, we do not want to run dev after initialization.

Describe the solution you'd like

I'd like to introduce an optional CLI option for the init command called --no-dev which, when set, disables launching the Storybook dev mode on completion of the initiate command. This argument would take precedence over the default behavior, which is to run dev if the CI or IN_STORYBOOK_SANDBOX environment variables are set.

storybook/code/lib/cli/src/initiate.ts

Line 408 in 7b2ddea

shouldRunDev: process.env.CI !== 'true' && process.env.IN_STORYBOOK_SANDBOX !== 'true',

Describe alternatives you've considered

To accomplish this today, we either need to pass the CI environment variable when we spawn the process on a developer's machine (which definitely is a smell), or snoop the stdout of the spwaned process and kill it when we see messages indicating storybook has started (which is really nasty).

Are you able to assist to bring the feature to reality?

yes, I can

Additional context

No response

[fastfrwrd]

Gosh, sorry - issues and discussions being separated meant I couldn't find it. #25510