I have pulled a docker image of a simple expressjs server, exposing port 3000 on a docker desktop on windows. When i try running any command starting with docker in the integrated terminal, I am told that docker does not exist. How can I solve this?

I would like to map port 3000 exposed by the docker container to my host environment’s port 80.
The command that I tried to input but could not be accepted is:
docker run -p 8080:3000 xpserver