(Docker) Fix postgresql password generation

[OscarCMD]

This makes the script generate a password that this code line can use without issue:

teledrive/docker/docker-compose.yml

Line 20 in 6c7ef8f

DATABASE_URL: postgres://postgres:${DB_PASSWORD}@db:5432/teledrive?connect_timeout=60&pool_timeout=60&socket_timeout=60

With base64 it could create "/" and "+" characters that can difer with the url causing teledrive can't connect to the database.

[vercel]

@OscarCMD is attempting to deploy a commit to the Restfire Studio Team on Vercel.

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