Allow connection to MySQL via Unix domain socket

[luixxiul]

Is your feature request related to a problem? Please describe.

The DSN format is fixed on this line, and it forces connection to MySQL database server via TCP.

It would be nice if a raw DSN string itself could be specified on the configuration file or the option to enable connection via Unix domain socket for the database was added.

Describe the solution you'd like

1. Add an option to set a raw DSN string for MySQL server
2. Add an option to enable connection to the MySQL server via Unix domain socket

Describe alternatives you've considered

No response

What are you using SFTPGo for?

Private user, home usecase (home backup/VPS)

Additional context

No response

[drakkan]

The option to provide a raw DSN string (replacing the individual fields) is already available and should cover your use case