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> Docker is a terrible idea for a database in general

Why? Genuine question, my gut feel is there's something wrong about it too but I can't put words to it nor have I found a benchmark that convinced me, but it's worth noting I'm not sure what I'm looking for

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I manage about 200 servers and docker crashing accounts for 20%+ of my issues so far. The servers are brought up easily on crash and that's not an issue for my services. For a database docker is nothing more than an extra layer of complications on top with iptables, volume system and all the layers it brings. It's just a bad wrapper for a production database which needs stability.

To be fair, that sounds like a problem with your infra. There are plenty of enterprises running Postgres in Docker/Kubernetes successfully. A lot of technical problems are not the stack or the engineer's capability, but the company culture and lack of funding, time or resources. If you had more of all 3, im sure your problem could be "solved" to an acceptable margin of error. Likely by you.

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