Er; I don’t think there is
you don’t run the command as
docker pull nginx:latest then docker image tag nginx:latest localhost:5000/nginx:latest
It is nonsense.
The commands to run are in the highlighted text. Normal text is part of the English of the solution.
It wants you to run these commands one after the other
docker pull nginx:latest
docker image tag nginx:latest localhost:5000/nginx:latest
docker push localhost:5000/nginx:latest
and similarly for the second 3 commands.