You can build your own image and run it:
docker build . -t your_image_name
docker container run -it --rm -p 8080:8080 your_image_name
Or you just can pull the one I created with love for you:
docker container run -it --rm -p 8080:8080 tuxotron/cve-2018-11776
Vulnerable application running on port 8080
To try the exploit you will need Go in your system. The systax is:
exploit-cve-2018-11776 URL COMMAND
For instance, you can run something like:
go run exploit-cve-2018-11776.go http://localhost:8080 "id"
This should output the id command result.
The exploit is a port to Go from the one written in python from this repository
Have fun!