Default connection string is hard-coded, only SQLite can be used.

[benedict-chan]

If not setting the environment variables, the default connection is hard-coded to SQLite as it prefixed with a "Filename="

var connectionString = _config.GetValue<string>("ASPNETCORE_Conduit_ConnectionString") ?? $"Filename={DEFAULT_DATABASE_FILE}";

Also to make it consistent, the default variable should be named "connection string" like the environment variable.

[adamhathcock]

Thanks!