Issues restarting container

[mencia]

I am using macOS Mojave, Version 10.14.6.

I created a container using repo2Docker.

After I shut down the Jupyter server and the container, how do I start the container again? According to https://towardsdatascience.com/docker-without-the-hassle-b98447caedd8, I should type the following in the terminal: docker run -p 12345:8888 <IMAGE ID> jupyter notebook --ip 0.0.0.0. When I run this command, I am asked to paste a URL in my browser, but I fail to connect using the provided URL.