Set postgres image/version with postgres:create option

[treythomas123]

I know you can choose a non-default postgres version like this:

POSTGRES_IMAGE_VERSION=9.4 dokku postgres:create <name>

But I usually use the dokku shell through SSH, and I don't see a way to set the postgres version when running like this. I'd like to be able to do the following:

ssh dokku@hostname postgres:create <name> -v 9.4

or maybe this way, to also support different images:

ssh dokku@hostname postgres:create <name> -i postgres:9.4

Is there a way to do this already that I'm not seeing? Or would you be open to a PR to add this option?

[josegonzalez]

No way to do it atm. If you want this feature, you're gonna have to build it for us.

[josegonzalez]

The proposal for this is available in this issue comment: dokku/dokku-mongo#37 (comment)

[josegonzalez]

See dokku/dokku-redis/issues/64 for more information.

[josegonzalez]

This is now implemented.