Running into trouble setting up lemmy via docker

I'm following the steps outlined in the official documentation at https://join-lemmy.org.

When I run

docker-compose up -d

It returns the following error

failed to read dockerfile: open /var/lib/docker/tmp/buildkit-mount182554177/Dockerfile: no such file or directory

Here's a screenshot from my terminal. https://i.imgur.com/Y27cfXf.png

How do I correct this?

EDIT: I've been researching this the best I can for some time now. The most common suggestion is to make sure that the Dockerfile is spelled correctly in the docker-compose.yml. It is.

Am I supposed to be creating a Dockerfile and fill it with some information? Is this intentionally left unaddressed by the guide for docker install? Is there some prerequisite I'm not fulfilling that the guide doesn't address?