...would be cool if there was a Linux package (or distro) that you could boot-up and then just change your git remote to and have your app up-and-running on your own hardware.
BTW, while the point is to enable private paas, you won't get around the issues that hit sites like this without heeding all the warnings and recommendations about building in redundancy for high availability.
This was noted well in this post: http://www.newvem.com/blog/main/2012/06/aws-cloud-best-pract...
"""It is a lot cheaper to add 1% uptime to a 95% SLA than it is to add 0.09% to a 99.9% SLA. Cloud application vendors (SaaS) need to pay very close attention to the additional resources that are invested in order to support a 99.9XX…% uptime SLA, and perhaps build it into their pricing plans."""