container can't reach postgres on localhost
Two services in docker compose, web and db. Web fails with ECONNREFUSED 127.0.0.1:5432 even though db is up and the logs say it's accepting connections.
Works fine when I run the app outside docker. What am I missing?
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Inside the web container, localhost is the web container. Use the service name: postgres://...@db:5432/. Check DATABASE_URL in your .env, it's probably still localhost from running outside docker.
Yep, .env still said localhost. Changed to db and it connected. Resolved.
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