Umami does not use directUrl when configuring Prisma.
This image, is built (and will always built) from the latest umami postgres docker image, with a small modification to the schema.prisma file, were it adds
directUrl to it, this way you can use Supabase as usal.
After pulling the docker image, you need to specifiy two environment variables:
DATABASE_URLDIRECT_URL
Both values can be found in your Supabase database information.