docker library

[Andriy Kornatskyy <andriy.kornatskyy@...>]

Hi folks! Here is another update for a docker library [1] that includes various lua related images. 

[1] https://github.com/akornatskyy/docker-library

These images are based on the Alpine Linux:

- lua 5.1, 5.2, 5.3, 5.4
- luajit 2.0, 2.1, 2.1-edge, 2.1-openresty
- luarocks (latest, all variants above)
- nginx stable (lua 5.1, luajit 2.0, 2.1, 2.1-edge, 2.1-openresty)

Thanks.

Andriy Kornatskyy