DOCKER

 

If you are referring to installing Docker inside a Docker container running on an Ubuntu host, you can follow these steps:

1. Start by launching the Docker container using the Ubuntu image. Run the following command:

arduino
docker run -it ubuntu

This command will start a new Docker container based on the Ubuntu image and open an interactive terminal session inside the container.

2. Update the package index inside the container:

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apt-get update

3. Install the necessary packages to allow apt to use repositories over HTTPS and to download and install Docker inside the container:

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

4. Import the Docker GPG key used for signing Docker packages:

bash
curl -fsSL https://download.docker.com/linux/ubuntu/gpg | gpg --dearmor -o /usr/share/keyrings/docker-archive-keyring.gpg

5. Add the Docker repository to the container's sources list:

bash
echo "deb [arch=amd64 signed-by=/usr/share/keyrings/docker-archive-keyring.gpg] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable" | tee /etc/apt/sources.list.d/docker.list > /dev/null

6. Update the package index once again:

sql
apt-get update

7. Install Docker inside the container:

arduino
apt-get install docker-ce docker-ce-cli containerd.io

8. Docker should now be installed inside the Docker container. You can verify the installation by checking the Docker version:

css
docker --version