[xt]

If someone is eager to try Lapis I have a Dockerfile available here:

https://github.com/torhve/lapis-docker

it includes a readme for getting started with Openresty in general.

[_mikz]

For plain openresty you can try https://github.com/3scale/docker-openresty It does not have fancy readme, but has batteries included. Luarocks works, supervisor is set up, cron is there...