Merge pull request tox-dev#33 from tox-dev/dont-leak-containers-or-vo…

…lumes

ensure that we don't leak containers or volumes after tox runs

Merge pull request tox-dev#30 from tox-dev/healthcheck

Support Docker Healthcheck

Merge pull request tox-dev#22 from tox-dev/fix-gateway-ip-on-macos

always use 0.0.0.0 as host for MacOS

Merge pull request tox-dev#19 from tox-dev/use_gateway

Publish host name, using the Gateway Host

Merge pull request tox-dev#17 from tox-dev/work-around-tox-session-re…

…factor

Fix logging in tox >= 3.7

tweak README wording re: UDP ports

"dcrosta" => "tox-dev"

don't build on py37 until travis fixes it

don't double the tag when docker pull-ing

don't fail if tests don't require docker and docker not running