Add -nostdin and -proxy to docker attach, allow arbirary signal to be sent via docker kill api endpoint
Allow attach from `docker start`
Add host integration script generation
Update doc with host integration
Add POSIX shell version of host_integration/manager.go in the style of hack/make.sh
Rename host_integration to host-integration for consistency
Fix issue killing container while sending signal
Fix rebase issue
Update docs
Fix attach race condition, improve unit tests, make sure the container is started before unblocking Start
Update documentation
Fix issue with autoremove