Here are some step-by-step commands on how to export SQL from the PostgreSQL database via terminal + Docker

1) Enter the Docker machine with the following command

docker exec -it seu_projeto_db_1 bash

2) Then run the command below to find out the directory that will exit:

pwd

3) The next step is to run the export command

pg_dump -U seu_projeto -h localhost -p 5432 -d seu_projeto -f seu_projeto.sql

4) Verify that SQL appears in the file list by running the following command

ls

5) If your_project.sql appears in the list of files, then you must exit the docker machine and run the command to extract this sql from docker

docker cp seu_projeto_db_1:/seu_projeto.sql

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