1. the first step is to downloade the offical image of NGINX from the docker hub using the following command:
''' docker pull nginx:latest '''
This will download the latest version but you can replace "latest" with the version you need.
2. To confirm that the image has been downloaded use the following command:
''' docker images '''
this should print out a list with all downloaded docker images including the just downloaded nginx docker image.
3.  The next step is to run the docker image using this command:
''' docker run -p 8000:80 nginx '''
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