Prepare for 0.9.19 release
Prepare for 0.9.19 release

remeeting/baseimage-docker,remeeting/baseimage-docker,floze/raspbian-baseimage,StepsAway/baseimage-docker,REDDOXX/baseimage-docker,phusion/baseimage-docker,jedisct1/phusion-baseimage-latest,REDDOXX/baseimage-docker,endersonmaia/baseimage-docker,floze/raspbian-baseimage,jedisct1/phusion-baseimage-latest,endersonmaia/baseimage-docker,StepsAway/baseimage-docker,phusion/baseimage-docker