[FLINK-38448] Rework doc build and doc deployment

[ferenc-csaky]

No description provided.

[gyfora]

Can you please add a minimal context on why this change is required and where the new action.yml is coming from?

[ferenc-csaky]

Context added to the Jira ticket. And the action.yml comes from me and ChatGPT :)

[gyfora]

How about we simply copy the appropriate action from the burnett01/rsync-deployments codebase: https://github.com/Burnett01/rsync-deployments/tree/7.1.0

We could copy the logic as is, and add the MIT license in: LICENSE.rsync-deployments

[ferenc-csaky]

How about we simply copy the appropriate action from the burnett01/rsync-deployments codebase: https://github.com/Burnett01/rsync-deployments/tree/7.1.0

We could copy the logic as is, and add the MIT license in: LICENSE.rsync-deployments

That action runs in a Docker img. So we need to copy over pretty much the whole codebase (action.yml, Dockerfile, entrypoint.sh). It has the benefit of a fixed rsync version, I'm 99% sure it won't matter at all. I'm okay to do that though, just let me know if that would be preferred.

[ferenc-csaky]

Or as an alternative we could copy entrypoint.sh and slightly modify the action.yml to call it directly, excluding the Docker portion.

[gyfora]

I was just looking at the current code and comparing with the entry point.sh/action.yml. It already looks very very similar .
We can reorganize/modify it, as long as we at least include the reference / notice its clean and clear where it's coming from