Juanita Lanaux

I have installed Calibre-web successfully using docker and OpenMediaVault 5. I have an external drive connected with my books and the database created by Calibre desktop client. The library that Calibre created is in a folder called My Library. The database is called metadata.db and is in the root of that folder. I can’t figure out how to enter the path to the database on caliber-web. It says DB Location is not Valid, Please Enter Correct Path. I am not proficient with Linux commands and don’t know how to enter the path. Any help would be great! Thanks.