Docker for Beginners -- wasn't able to create a docker image ....

I have been working through the tutorial -- https://docker-curriculum.com -- beginner course I get an error when trying to Create a Docker Image. -- run the image and see if it actually works

C:\Users\CarolMugaas\Dockerfiles>docker run -p 8888:5000 ckmugaas/catnip * Running on http://0.0.0.0:5000/ docker: Error response from daemon: OCI runtime create failed: container_linux.go:380: starting container process caused: exec: "*": executable file not found in $PATH: unknown. docker run -p 8888:5000 docker.io/ckmugaas/catnip * Running on http://0.0.0.0:5000/

I was able to complete -- run docker images C:\Users\CarolMugaas\cd Dockerfiles C:\Users\CarolMugaas\Dockerfiles>docker images REPOSITORY TAG IMAGE ID CREATED SIZE ckmugaas/catnip latest 7f49515d5d73 24 minutes ago 910MB