Test Postgres + Docker

[sanikolaev]

Proposal:

I prepared a test case to test Postgres with Docker, which looks more like what can be in production, compared to this test. You can find the discussion and test case here: https://github.com/manticoresoftware/manticoresearch/discussions/1801#discussioncomment-9824303.

Let's make a CLT test from it.

Checklist:

^{To be completed by the assignee. Check off tasks that have been completed or are not applicable.}

• [ ] Implementation completed
• [ ] Tests developed