Docs: Explain non-production / advanced install options in more detail

[rschu1ze]

Fixes: #49878

Changelog category (leave one):

• Documentation (changelog entry is not required)

[robot-ch-test-poll]

This is an automated comment for commit d7002f8 with description of existing statuses. It's updated for the latest CI running
The full report is available here
The overall status of the commit is 🟢 success

Check name	Description	Status
CI running	A meta-check that indicates the running CI. Normally, it's in success or pending state. The failed status indicates some problems with the PR	🟢 success
Docs Check	Builds and tests the documentation	🟢 success
Mergeable Check	Checks if all other necessary checks are successful	🟢 success
Push to Dockerhub	The check for building and pushing the CI related docker images to docker hub	🟢 success
Style Check	Runs a set of checks to keep the code style clean. If some of tests failed, see the related log from the report	🟢 success

[DanRoscigno]

LGTM