Hello – if anyone comes up against this error:
docker: invalid reference format: repository name must be lowercase.
when running something similar to this:
docker run -d -p 5001:3000 -v $(pwd):/app react-app
then try wrapping the volume mapping paths in quotes e.g.
docker run -d -p 5001:3000 -v "$(pwd):/app" react-app
Solution detailed here: Docker error: invalid reference format: repository name must be lowercase - Stack Overflow