I asked a detailed question on stackoverflow, with images :

Here is a copy of the text :

I am using docker to manage my Django apps, and have the same configuration on my laptop and digital ocean :

From my laptop I can connect to PostGreSQL thanks to the adminR image (https://hub.docker.com/_/adminer)

But if I try to connect to PostGreSQL from adminer on the localhost, I can’t !

I can ping and find PostGreSQL from the django container, but I can’t migrate my database from django scripts.

Funny enough, I can migrate on the digital ocean cloud from my laptop : and I can see the updated database on my laptop’s admineR page.

So the issue is obviously an issue of networking between the containers… But if I can ping the service, why can’t django access it ????

(Please refer to Stackoverflow’s question to have schema and images explaining the whole thing : https://stackoverflow.com/questions/65012898/cant-connect-to-postgresql-from-a-same-host-container

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