chore: add local dev docker setup

[ryanchristo]

Description

This pull request includes a local development environment setup using docker.

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How to test

pg_dump [DATABASE_URL] --file dump-server-production -F c

docker-compose up

yarn start

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[ryanchristo]

This is ready for review. I've been using this for both regen-web and groups-ui. We can iterate on it over time and open to initial feedback but this seems like a good starting point to me.

[flagrede]

Thanks for doing that, code looks good.
Not sure I will have time to test that soon but it's not blocking for merging as it won't break anything and we can iterate on it if needed.