Eleventy: Add host option to --serve

[DirtyF]

Given Eleventy is launched through a Docker instance 
When I run eleventy --serve --host 0.0.0.0
Then UI is served http://0.0.0.0:8080

$ eleventy serve --help
--serve
       Run web server on --port (default 8080) and watch them too
--host
        Host to bind to (default localhost)

[d2s]

This would be useful for several use cases. Just thinking that there should be a disclaimer to note that the serve mode is only meant for development, not for production usage (as someone will likely end up using it for that too…).

[zachleat]

This is exposed in the config API but not as a CMD line param: https://browsersync.io/docs/options#option-host

https://www.11ty.io/docs/config/#override-browsersync-server-options

[DirtyF]

@zachleat Thanks for pointing in the right direction. 🙏

Ideally I wish I could pass many configuration files to be able to only add this to a specific environment without having to copy my default config. But maybe is there another way to achieve this:

ELEVENTY_ENV=staging eleventy --serve --config=.eleventy.js,.eleventy.staging.js