Azure database - unable to locate in my Azure account

I have an Azure account where a developer that used to work with me has set up an MSSQL database on an Ubuntu VM. The PHP (CodeIgniter) system I am working on logs in (so database queries work correctly). I have the following information available: * The connection string uses "sqlsrv" driver in CodeIgniter * The hostname in the CI config is "127.0.0.1". * Using "top" command, I can see "sqlservr" using resources (12.8% mem, 0.7% CPU) * I can run SQL scripts with "sqlcmd -S localhost" But yet, I can't find anywhere where this database is listed in my Azure portal. Very frustrating. There is nothing listed under "SQL databases" and I have been through all the visible options in the Linux VM, and can't find it. What am I missing?