Data not persisted in PostgreSQL database

[boreal fern]

I am hosting 2 Docker containers on a virtual server: a Spring application and a PostgreSQL database. Through SSH and curl, I can persist entities through the endpoints and retrieve them through a different endpoint using curl. When I go into my PostgreSQL Docker container and try to view what is in my database using psql, I see 0 rows. I have the following log in my PostgreSQL Docker container
I would be grateful if someone can give me a hint.

Log:

[slim mortar]

<@&987246584574140416> please have a look, thanks.

[slim mortar]

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[boreal fern]

Data not persisted in PostgreSQL database