smalllight - https://code.google.com/p/smalllight/
Try quickly with sample images:
git clone [repository]
docker build -t nasu/smalllight .
docker run -d -p 80:80 --name smalllight nasu/smalllight
You can confirm one resize image by accessing the following.
http://[host]/twitter.png
http://[host]/resize/twitter.png
Using your images:
docker run -d -p 80:80 --name smalllight -v `pwd`/html:/var/www/html nasu/smalllight