I was working on installing Docker in the Ubuntu OS of my Dual Boot computer. I entered all of the code in the “1. Set up Docker’s apt repository.” section at https://docs.docker.com/engine/install/ubuntu/#install-using-the-repository in terminal. However after entering “sudo apt-get update” in terminal as shown in the last line in the “1. Set up Docker’s apt repository.” section I get the following errors:

I was working on installing Docker in the Ubuntu OS of my Dual Boot computer. I entered all of the code in the “1. Set up Docker’s apt repository.” section at https://docs.docker.com/engine/install/ubuntu/#install-using-the-repository in terminal. However after entering “sudo apt-get update” in terminal as shown in the last line in the “1. Set up Docker’s apt repository.” section I get the following errors: