ubuntu 安装docker

https://docs.docker.com/engine/install/ubuntu/

 

1. Update the apt package index and install packages to allow apt to use a repository over HTTPS:

   $ sudo apt-get update
   
   $ sudo apt-get install \
       ca-certificates \
       curl \
       gnupg
   

2. Add Docker’s official GPG key:

   $ sudo mkdir -m 0755 -p /etc/apt/keyrings
   $ curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo gpg --dearmor -o /etc/apt/keyrings/docker.gpg
   

3. Use the following command to set up the repository:

   $ echo \
     "deb [arch="$(dpkg --print-architecture)" signed-by=/etc/apt/keyrings/docker.gpg] https://download.docker.com/linux/ubuntu \
     "$(. /etc/os-release && echo "$VERSION_CODENAME")" stable" | \
     sudo tee /etc/apt/sources.list.d/docker.list > /dev/null
   
   
   

   1. Update the apt package index:

      $ sudo apt-get update
      

      Receiving a GPG error when running apt-get update?

      Your default umask may be incorrectly configured, preventing detection of the repository public key file. Try granting read permission for the Docker public key file before updating the package index:

      $ sudo chmod a+r /etc/apt/keyrings/docker.gpg
      $ sudo apt-get update
      

   2. Install Docker Engine, containerd, and Docker Compose.

      • Latest
      • Specific version
      
      

      To install the latest version, run:

       $ sudo apt-get install docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin
      

      ---

   3. Verify that the Docker Engine installation is successful by running the hello-world image:

      $ sudo docker run hello-world