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Older versions of Docker were called docker
, docker.io
, or docker-engine
. If these are installed, uninstall them:
sudo apt-get remove docker docker-engine docker.io containerd runc
Before you install Docker Engine for the first time on a new host machine, you need to set up the Docker repository. Afterward, you can install and update Docker from the repository.
Set up the repository
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 \ apt-transport-https \ ca-certificates \ curl \ gnupg \ lsb-release
Add Docker’s official GPG key:
curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo gpg --dearmor -o /usr/share/keyrings/docker-archive-keyring.gpg
Use the following command to set up the stable repository. To add the nightly or test repository, add the word nightly
or test
(or both) after the word stable
in the commands below.
echo \ "deb [arch=amd64 signed-by=/usr/share/keyrings/docker-archive-keyring.gpg] https://download.docker.com/linux/ubuntu \ $(lsb_release -cs) stable" | sudo tee /etc/apt/sources.list.d/docker.list > /dev/null
Install Docker Engine
Update the apt
package index, and install the latest version of Docker Engine and containerd, or go to the next step to install a specific version:
sudo apt-get update sudo apt-get install docker-ce docker-ce-cli containerd.io
Verify that Docker Engine is installed correctly by running the hello-world
image.
sudo docker run hello-world
Docker-CE on Ubuntu can be setup using Docker’s official convenience script:
curl https://get.docker.com | sh \ && sudo systemctl --now enable docker
Setup the stable
repository and the GPG key:
distribution=$(. /etc/os-release;echo $ID$VERSION_ID) \ && curl -s -L https://nvidia.github.io/nvidia-docker/gpgkey | sudo apt-key add - \ && curl -s -L https://nvidia.github.io/nvidia-docker/$distribution/nvidia-docker.list | sudo tee /etc/apt/sources.list.d/nvidia-docker.list
Install the nvidia-docker2
package (and dependencies) after updating the package listing:
sudo apt-get update sudo apt-get install -y nvidia-docker2
Restart the Docker daemon to complete the installation after setting the default runtime:
sudo systemctl restart docker
At this point, a working setup can be tested by running a base CUDA container:
sudo docker run --rm --gpus all nvidia/cuda:11.0-base nvidia-smi
The Docker create command will create a new container for us from the command line:
sudo docker create --name nginx_base -p 80:80 nginx:alpine
Inspect Images
sudo docker images -a
Inspect Containers
sudo docker ps -a
We will use the docker cp command to copy this file onto the running container
sudo docker cp index.html nginx_base:/usr/share/nginx/html/index.html
Create an Image From a Container
sudo docker commit nginx_base hi_mom_nginx
sudo add-apt-repository ppa:deadsnakes/ppa sudo apt-get update sudo apt-get install python3.6
Change the Python3 default version in Ubuntu
sudo update-alternatives --install /usr/bin/python python /usr/bin/python3.5 1 sudo update-alternatives --install /usr/bin/python python /usr/bin/python3.6 2 sudo update-alternatives --config python
sudo apt install python3-pip echo "alias pip=pip3" >> ~/.bash_aliases source ~/.bash_aliases alias pip='python3.6 -m pip' pip install --upgrade pip