Create a single layer Dockerfile for hub.docker
Create a single layer Dockerfile for hub.docker

Enable push/pull from hub.docker, and potential automated builds, by
creating the image as a single layer. Reduces total space for retrieval
and storage to similar to flattened gzip approach.

a113n/bcbio-nextgen,lbeltrame/bcbio-nextgen,lpantano/bcbio-nextgen,vladsaveliev/bcbio-nextgen,brainstorm/bcbio-nextgen,lbeltrame/bcbio-nextgen,mjafin/bcbio-nextgen,chapmanb/bcbio-nextgen,lpantano/bcbio-nextgen,brainstorm/bcbio-nextgen,gifford-lab/bcbio-nextgen,gifford-lab/bcbio-nextgen,Cyberbio-Lab/bcbio-nextgen,a113n/bcbio-nextgen,chapmanb/bcbio-nextgen,biocyberman/bcbio-nextgen,mjafin/bcbio-nextgen,vladsaveliev/bcbio-nextgen,lpantano/bcbio-nextgen,chapmanb/bcbio-nextgen,lbeltrame/bcbio-nextgen,mjafin/bcbio-nextgen,brainstorm/bcbio-nextgen,gifford-lab/bcbio-nextgen,vladsaveliev/bcbio-nextgen,Cyberbio-Lab/bcbio-nextgen,Cyberbio-Lab/bcbio-nextgen,biocyberman/bcbio-nextgen,biocyberman/bcbio-nextgen,a113n/bcbio-nextgen