Script engine failure

```
➜  $ docker run -it --rm gophernet/nmap --script=ssl-enum-ciphers -p 443 google.com
Starting Nmap 7.70 ( https://nmap.org ) at 2019-10-09 21:15 UTC
NSE: failed to initialize the script engine:
could not locate nse_main.lua
stack traceback:
	[C]: in ?

QUITTING!
```