add memory constraints to docker-compose.yml

[fuyufjh]

Is your feature request related to a problem? Please describe.

Even though Docker Compose is not recommended for production usage, sometimes users would like to use it for single-node deployment.

https://docs.docker.com/config/containers/resource_constraints/

We can leverage the built-in memory constraint and pass RW the correct total_memory

By the way, need to add restart: always as well.

Describe the solution you'd like

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Describe alternatives you've considered

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Additional context

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