[DOC] Docker for a backend and frontend apps

[mdanilowicz]

Description

Prepare an example of preparing docker and docker networks to communicate frontend and backend. https://shopwarecommunity.slack.com/archives/C050L6NCMGQ/p1718796847256709

Use Case

Community question

Proposed Solution

No response

Alternatives Considered

No response

Additional Context

No response

[BrocksiNet]

I was working on this the last few days and would need some peps for testing. :grinning:

Have a look at docker-composable-frontends. Feedback is welcome. Thx.