docker: driver failed programming external connectivity on endpoint webserver

Question

I am trying to run a docker example following this documentation

This is my command:

docker run -d -p 80:80 --name webserver nginx

<

Answer 1

Check what's on port 80 right now - sudo ss -tulpn | grep :80

You may have apache2 running. You can check it - sudo service apache2 status If so - sudo service apache2 statop