an example of command to run this image is shown below.

docker run -it --rm -p 8080:80 gorogoroyasu/jupyter-php-docker:0.1 /bin/bash

and inside of container,

jupyter-notebook --port 80 --ip 0.0.0.0 --allow-root &

when you access to localhost:8080, you can see your jupyter notebook with PHP7.1.

Q&A:
password?
when you start jupyter notebook with the command shown above,
something like

http://0.0.0.0:80/?token=abcdefghijklmnopqrstu  

will appear.
then, you can login jupyter notebook with URL:

http:localhost:8080/?token=abcdefghijklmnopqrstu  

enjoy your PHP life!