If migration folder doesn't exist in phar binary
When you create a phar if you don't include a migration file the folder is not included in your distribution binary, this cause an error when you run the migration command
Symfony\Component\Finder\Exception\DirectoryNotFoundException
The "phar:///home/.../database/migrations" directory does not exist.

@nunomaduro, what are your thoughts on this? Seems fine to me. The alternative is just making sure that the migrations directory is in your box.json which is what I think we've previously recommended. However, this would cope with when there are no migrations but you still want to use the DB I guess?
Yes, my case is I'm using the dump command to generate the SQL file with all the schema and I want to use that SQL as base and create migration files out of the phar file.
As you mention to include the migration folder in the phar file I need migrations