1.Place your certifcate (name: "sp-cert.pem") and key (name: "sp-key.pem") inside the shibboleth folder.
2.Build the docker image with
docker build -t shibboleth-example .
3.Run the docker image with
docker run -itd --network host shibboleth-example httpd-shibd-foreground
4.Append to your /etc/hosts file the line
127.0.0.1 sp26.example.org