When running docker desktop version 2.1.5.0 (40323) on: OS Name: Microsoft Windows 10 Pro OS Version: 10.0.19013 N/A Build 19013 Eben though WSL 2 based engine is enabled in Settings/General docker container run hello-world on Ubuntu rep. In this tutorial, I will show you step-by-step how to install and configure Portainer on Ubuntu 16.04 LTS. We will install and configure Portainer, deploy the Apps Container, Manage Container, images, network, and volumes for our Docker environment. Ubuntu Server 16.04; Root privileges; What we will do. Install Docker on Ubuntu 16.04.
El capitan mac os installer. Estimated reading time: 10 minutes
To get started with Docker Engine on Ubuntu, make sure youmeet the prerequisites, theninstall Docker.
Prerequisites
OS requirements
To install Docker Engine, you need the 64-bit version of one of these Ubuntuversions:
- Ubuntu Groovy 20.10
- Ubuntu Focal 20.04 (LTS)
- Ubuntu Bionic 18.04 (LTS)
- Ubuntu Xenial 16.04 (LTS)
Docker Engine is supported on x86_64 (or amd64), armhf, and arm64 architectures.
Uninstall old versions
Docker Ubuntu 20.04 Image
Docker Ubuntu 20.04 Lts
Older versions of Docker were called docker, docker.io, or docker-engine.If these are installed, uninstall them:
It’s OK if apt-get reports that none of these packages are installed.
The contents of /var/lib/docker/, including images, containers, volumes, andnetworks, are preserved. If you do not need to save your existing data, and want tostart with a clean installation, refer to the uninstall Docker Enginesection at the bottom of this page.
Supported storage drivers
Docker Engine on Ubuntu supports overlay2, aufs and btrfs storage drivers.
Docker Engine uses the overlay2 storage driver by default. If you need to useaufs instead, you need to configure it manually.See use the AUFS storage driver
Installation methods
You can install Docker Engine in different ways, depending on your needs:
Most usersset up Docker’s repositories and installfrom them, for ease of installation and upgrade tasks. This is therecommended approach.
Some users download the DEB package andinstall it manually and manageupgrades completely manually. This is useful in situations such as installingDocker on air-gapped systems with no access to the internet.
In testing and development environments, some users choose to use automatedconvenience scripts to install Docker.
Install using the repository
Before you install Docker Engine for the first time on a new host machine, you needto set up the Docker repository. Afterward, you can install and update Dockerfrom the repository.
Set up the repository
Update the
aptpackage index and install packages to allowaptto use arepository over HTTPS:Add Docker’s official GPG key:
Use the following command to set up the stable repository. To add thenightly or test repository, add the word
nightlyortest(or both)after the wordstablein the commands below. Learn about nightly and test channels.Note: The
lsb_release -cssub-command below returns the name of yourUbuntu distribution, such asxenial. Sometimes, in a distributionlike Linux Mint, you might need to change$(lsb_release -cs)to your parent Ubuntu distribution. For example, if you are usingLinux Mint Tessa, you could usebionic. Docker does not offer any guarantees on untestedand unsupported Ubuntu distributions.
Install Docker Engine
Update the
aptpackage index, and install the latest version of DockerEngine and containerd, or go to the next step to install a specific version:Got multiple Docker repositories?
If you have multiple Docker repositories enabled, installingor updating without specifying a version in the
apt-get installorapt-get updatecommand always installs the highest possible version,which may not be appropriate for your stability needs.To install a specific version of Docker Engine, list the available versionsin the repo, then select and install:
a. List the versions available in your repo:
b. Install a specific version using the version string from the second column, for example,
5:18.09.1~3-0~ubuntu-xenial.Verify that Docker Engine is installed correctly by running the
hello-worldimage.This command downloads a test image and runs it in a container. When thecontainer runs, it prints an informational message and exits.
Docker Engine is installed and running. The docker group is created but no usersare added to it. You need to use sudo to run Docker commands.Continue to Linux postinstall to allow non-privilegedusers to run Docker commands and for other optional configuration steps.
Upgrade Docker Engine
To upgrade Docker Engine, first run sudo apt-get update, then follow theinstallation instructions, choosing the newversion you want to install.
Install from a package
If you cannot use Docker’s repository to install Docker Engine, you can download the.deb file for your release and install it manually. You need to downloada new file each time you want to upgrade Docker.
Go to
https://download.docker.com/linux/ubuntu/dists/,choose your Ubuntu version, then browse topool/stable/, chooseamd64,armhf, orarm64, and download the.debfile for the Docker Engineversion you want to install.Note: To install a nightly or test (pre-release) package,change the word
stablein the above URL tonightlyortest.Learn about nightly and test channels.Install Docker Engine, changing the path below to the path where you downloadedthe Docker package.
The Docker daemon starts automatically.
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Verify that Docker Engine is installed correctly by running the
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This command downloads a test image and runs it in a container. When thecontainer runs, it prints an informational message and exits.
Docker Engine is installed and running. The docker group is created but no usersare added to it. You need to use sudo to run Docker commands.Continue to Post-installation steps for Linux to allownon-privileged users to run Docker commands and for other optional configurationsteps.
Docker Ubuntu 20.04 Python 3.8
Upgrade Docker Engine
To upgrade Docker Engine, download the newer package file and repeat theinstallation procedure, pointing to the new file.
Install using the convenience script
Docker provides convenience scripts at get.docker.comand test.docker.com for installing edge andtesting versions of Docker Engine - Community into development environments quickly andnon-interactively. The source code for the scripts is in thedocker-install repository.Using these scripts is not recommended for productionenvironments, and you should understand the potential risks before you usethem:
- The scripts require
rootorsudoprivileges to run. Therefore,you should carefully examine and audit the scripts before running them. - The scripts attempt to detect your Linux distribution and version andconfigure your package management system for you. In addition, the scripts donot allow you to customize any installation parameters. This may lead to anunsupported configuration, either from Docker’s point of view or from your ownorganization’s guidelines and standards.
- The scripts install all dependencies and recommendations of the packagemanager without asking for confirmation. This may install a large number ofpackages, depending on the current configuration of your host machine.
- The script does not provide options to specify which version of Docker to install,and installs the latest version that is released in the “edge” channel.
- Do not use the convenience script if Docker has already been installed on thehost machine using another mechanism.
This example uses the script at get.docker.com toinstall the latest release of Docker Engine - Community on Linux. To install the latesttesting version, use test.docker.com instead. Ineach of the commands below, replace each occurrence of get with test.
Warning:
Always examine scripts downloaded from the internet beforerunning them locally.
If you would like to use Docker as a non-root user, you should now consideradding your user to the “docker” group with something like:
Remember to log out and back in for this to take effect!
Warning:
Adding a user to the “docker” group grants them the ability to run containerswhich can be used to obtain root privileges on the Docker host. Refer toDocker Daemon Attack Surfacefor more information.
Docker Engine - Community is installed. It starts automatically on DEB-based distributions. OnRPM-based distributions, you need to start it manually using the appropriatesystemctl or service command. As the message indicates, non-root users can’trun Docker commands by default.
Note:
To install Docker without root privileges, seeRun the Docker daemon as a non-root user (Rootless mode).
Upgrade Docker after using the convenience script
If you installed Docker using the convenience script, you should upgrade Dockerusing your package manager directly. There is no advantage to re-running theconvenience script, and it can cause issues if it attempts to re-addrepositories which have already been added to the host machine.
Uninstall Docker Engine
Uninstall the Docker Engine, CLI, and Containerd packages:
Images, containers, volumes, or customized configuration files on your hostare not automatically removed. To delete all images, containers, andvolumes:
You must delete any edited configuration files manually.
Next steps
- Continue to Post-installation steps for Linux.
- Review the topics in Develop with Docker to learn how to build new applications using Docker.