SailAbove: How yo boot from Docker Hub
Merge pull request #21 from gierschv/sailabove/ext-repos

SailAbove: How yo boot from Docker Hub
SailAbove Docker Hub: easier to provide original docker hub url
Merge pull request #22 from gierschv/sailabove/ext-repos

SailAbove Docker Hub: easier to provide original docker hub url
Merge remote-tracking branch 'upstream/master'