Install proper netcat for dbdump transfers
Fix sherpa production environment for runit
Bind to phusion/baseimage:0.9.8

0.9.8 is the newest version at the time of this writing. Attempt
upgrades in controlled test-conditions at any time, we're only bound to
a version to ensure that the original image will keep working
indefinetly.
Build postgres on phusion/baseimage
Add postgres crontab with vacuumdb