No 3.17 image

[fredemmott]

https://hub.docker.com/r/hhvm/hhvm/tags/

[fredemmott]

refs hhvm/packaging#147
Also need the various LTS and -proxygen images per readme.

[fredemmott]

@mofarrell : still missing -proxygen

[aorenste]

@fredemmott I was actually in the process of scripting this and was kind of surprised when the script reported that it no longer needed to build hhvm/hhvm:3.17.0 (because @mofarrell built it). Should be all set now.

[fredemmott]

@aorenste : I see it on dockerhub now, but I don't see the proxygen dockerfile change in this repo?

[fredemmott]

oh, it was changed to :latest in the previous update; will need care for LTS update though