I would be interested, would even help testing and contribute but the next problem that arise if users had such easy way to deploy apps is, how do you handle backups, migration to new versions, single sign on, there are projects similar to this idea that already go very far, such as https://cloudron.io but they are "limited" in the amounts of apps they can provide with support and quality path for upgrades.

Inevitably, if I had all the apps I want to spin at hands, I would need a very neat way to make sure path to upgrades are smooth, don't break things already in place and potentially used in "production" by either friends of family..