How to install docker in ubuntu

How to install docker in Ubuntu

The method and steps to install docker in Ubuntu are as follows:

1. Update the apt source index of ubuntu

sudo apt-get update

2. The installation package allows apt to use the warehouse through HTTPS

Recommended learning: docker tutorial

sudo apt-get install \
    apt-transport-https \
    ca-certificates \
    curl \
    software-properties-common

3. Add Docker official GPG key

curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -

4. Set up Docker stable version warehouse

sudo add-apt-repository \   "deb [arch=amd64] https://download.docker.com/linux/ubuntu \
   $(lsb_release -cs) \
   stable"

5. After adding the warehouse, update the apt source index

sudo apt-get update

6. Install the latest version of Docker CE (Community Edition)

sudo apt-get install docker-ce

7 , Check whether Docker CE is installed correctly

sudo docker run hello-world

The following message appears, indicating that the installation is successful

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