This virtual environment is a simple php web application that contains an example of an XML eXternal Entity vulnerability.
To run XXELab in a Docker container. Build the image:
$ git clone https://github.com/KGorbakon/xxe-self-practice.git
$ cd xxe-self-practice
$ docker build -t xxe-self-practice .
Run:
$ docker run -it --rm -p 127.0.0.1:5000:80 xxe-self-practice
Open http://localhost:5000 and have fun.