I can't edit, but I was hoping the backticks would create a code block, so please ignore those backticks. Also, more details can be found on their documentation [0].
[0] https://symfony.com/doc/current/doctrine.html#configuring-th...
[0] https://symfony.com/doc/current/doctrine.html#configuring-th...
DATABASE_URL="sqlite:///%kernel.project_dir%/var/app.db"
Use two or more spaces at the start of the line: https://news.ycombinator.com/formatdoc