This is a simple time sensitive math question. The user has 500 miliseconds to send the correct answer to random addition questions. The ideas was lifted in almost its entirety from the 2013 HackYou CTF PPC100 challenge. http://www.hacksonville.com/2012/hackyou-ctf-ppc100-hugecaptcha/

Simple...

docker build -t antihuman .
docker run -tid -p 3000:3000 antihuman

# To test
./local.sh

• Nodejs

npm install express  
npm install jade  

useradd -d /home/ctfuser -m -s /sbin/nologin ctfuser  
cp systemd/antihuman.service /usr/lib/systemd/system/  
systemctl enable antihuman.service  
systemctl start antihuman  

local.sh is a example on how to solve the challenge.