Use `bin/rails` rather than `rake` for deployment tasks

[jcoyne]

Because this is the documented way of running migrations https://guides.rubyonrails.org/active_record_migrations.html#running-migrations

and this runs the migrations in the current bundle context if they are using bundler, without any extra capistrano gems required.

[mathagician]

@jcoyne Is it a suggestion or any code changes is required? can u guide ?

[jcoyne]

Yes, this was a feature request. I'm pretty sure the existing command is here:

rails/lib/capistrano/tasks/migrations.rake

Line 25 in 6c8603f

execute :rake, fetch(:migration_command)

but I'm not sure how to replace :rake with bin/rails as I'm not sure that method accepts non-Symbol arguments.