If you have a .backup file from pgAdmin4, then it can be restored using `pg_restore`.

Use this command to restore :
`pg_restore -h <your_db_host> -U <your_db_user> -d <your_db_name> /backup/mydb.backup`

This is the example of using the command:
`pg_restore -h 172.17.0.1 -U postgres -d mydb /backup/mydb.backup`

You can get your host IP using this : `hostname -I`

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### Optional

You can create a backup using this command

`pg_dump -h <your_db_host> -U <your_db_user> -F c -d <your_db_name> -f /backup/mydb.backup`

`pg_dump -h 172.17.0.1 -U postgres -F c -d mydb -f /backup/mydb.backup`