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Install Docker Ce Ubuntu 18

Step 3) Install docker with apt command. Now, we are all set to install latest and stable version of docker from its official repository. Run the beneath to install it $ sudo apt-get update $ sudo apt install docker-ce -y. Once the docker package is installed, add your local user to docker group by running following command. Now let’s install Docker on Ubuntu 20.04. Run the following command in the terminal window: sudo apt install docker.io. Type y and hit Enter to confirm the installation. Once the install is completed, the output notifies you Docker has been installed. Step 3 – Install Docker Ubuntu. Once the repository is updated, you can install the Docker on Ubuntu by running the following command: apt-get install docker-ce -y. This command will install the latest version of Docker from the Docker official repository. Step 4 – Verify Docker Version. Once the docker ce repo has been configured successfully then run following command to verify which version of docker is available for installation email protected # dnf list docker-ce Docker CE Stable - x8664 1.7 kB/s 3.8 kB 00:02 Available Packages docker-ce.x8664 3:19.03.13-3.el8 docker-ce-stable email protected #. Docker is an application that simplifies the process of managing application processes in containers. In this tutorial, you'll install and use Docker Community Edition (CE) on Ubuntu 18.04.

Estimated reading time: 10 minutes

To get started with Docker Engine on Ubuntu, make sure youmeet the prerequisites, theninstall Docker.

Prerequisites

OS requirements

Sudo apt-get update && sudo apt-get install docker-ce docker-ce-cli containerd.io Docker has been installed. Check if Docker is working. Sudo docker run hello-world If you get the following message, your Docker installation is working: Hello from Docker! This message shows that your installation appears to be working correctly. Install Docker on Ubuntu 18.04. We are almost done. Use the apt command to install Docker: sudo apt install docker-ce 6. Check Docker Status. Once the installation is complete, it is a good idea to check the status of the service: sudo systemctl status docker That’s it, you now know how to install Docker on Ubuntu 18.04. Oct 01, 2021 To install Docker without root privileges, seeRun the Docker daemon as a non-root user (Rootless mode). Install Docker Ce On Ubuntu 18.04 Upgrade Docker after using the convenience script. If you installed Docker using the convenience script, you should upgrade Dockerusing your package manager directly.

Docker CE for Ubuntu. To install Docker CE, you need the 64-bit version of one of these Ubuntu versions: Artful 17.10 (Docker CE 17.11 Edge and higher only) Zesty 17.04; Xenial 16.04 (LTS) My blog on this version; Trusty 14.04 (LTS) $ lsbrelease -a No LSB modules are available. How can I install Docker CE on Ubuntu 20.04 19.04 18.04 16.04 Linux distribution. Docker Engine is a container runtime engine which allows you to package your applications with all of its dependencies into a standardized unit for software development and distribution.

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.

18.04

Uninstall old versions

Docker Ce Install Ubuntu 19.10

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

Docker ubuntu container

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

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

  2. Add Docker’s official GPG key:

  3. Use the following command to set up the stable repository. To add thenightly or test repository, add the word nightly or test (or both)after the word stable in the commands below. Learn about nightly and test channels.

    Note: The lsb_release -cs sub-command below returns the name of yourUbuntu distribution, such as xenial. Sometimes, in a distributionlike Linux Mint, you might need to change $(lsb_release -cs)to your parent Ubuntu distribution. For example, if you are using Linux Mint Tessa, you could use bionic. Docker does not offer any guarantees on untestedand unsupported Ubuntu distributions.

Install

Install Docker Engine

  1. Update the apt package 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 install orapt-get update command always installs the highest possible version,which may not be appropriate for your stability needs.

  2. 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.

  3. 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.

  1. Go to https://download.docker.com/linux/ubuntu/dists/,choose your Ubuntu version, then browse to pool/stable/, choose amd64,armhf, or arm64, and download the .deb file for the Docker Engineversion you want to install.

    Note: To install a nightly or test (pre-release) package,change the word stable in the above URL to nightly or test.Learn about nightly and test channels.

  2. Install Docker Engine, changing the path below to the path where you downloadedthe Docker package.

    The Docker daemon starts automatically.

  3. 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 Post-installation steps for Linux to allownon-privileged users to run Docker commands and for other optional configurationsteps.

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 root or sudo privileges 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.

Install Docker Ce On Ubuntu

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:

Install Docker Ce Ubuntu 18.04

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:

Install Docker On Linux

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).

Install Docker Ce On Ubuntu 18.04

Ubuntu 20 Docker

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

  1. Uninstall the Docker Engine, CLI, and Containerd packages:

  2. Images, containers, volumes, or customized configuration files on your hostare not automatically removed. To delete all images, containers, andvolumes:

Install Docker On Ubuntu

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.
requirements, apt, installation, ubuntu, install, uninstall, upgrade, update

In this tutorial we are going to learn how to install Docker on Ubuntu 18.04. Docker is container platform that provides an isolated environment for applications and separate application from the operating system using containers.

Note that, the default Ubuntu package repository includes the docker package (docker.io) in it, but it's not the latest version. in order to install the latest version will use the apt repository provided by the docker developers.

Install Docker Ce Ubuntu 18.04

Docker ubuntu 16.04 image

Before we begin, Uninstall any older version of Docker engine(If you installed previously).

How to do it...

The steps to install Docker on Ubuntu 18.04 are as follows:

  1. Set up Docker Ubuntu apt repository.
  2. Install the latest version of Docker.

Log in to the Ubuntu shell and run the following set of commands to enable docker apt repository for Ubuntu 18.04:

With docker repository in place, now run the apt-get command and install the docker-ce package:

After all operations are completed, docker engine is up and running on your Ubuntu 18.04 server. You can run docker version command to check the version of docker running on your system:

To view the status of the docker service, run:

We can use the systemctl command to start, restart and stop docker engine in Ubuntu 18.04. For example, Stop the docker engine with following command:

Ubuntu

By default, docker starts automatically on server reboot. If you don't want to start the service automatically, disable the docker service:

If you want to start the service automatically, then the docker service should be enabled:

Run Docker Containers on Ubuntu 18.04

We need images in order to start new containers (We can download images with docker pull command.). For example, To run nginx on Docker, first, we need to download nginx image:

Then, we start a new nginx container using the nginx image we downloaded:

Docker Ubuntu 16.04 Image

In the above example, we started a new container called ubuntu-nginx. We also mapped port 80 of the host machine to port 80 of the ubuntu-nginx container.

To get a list of running containers on your Ubuntu 18.04 Server, Type:

To view all containers (Both running and stopped), Type:

Also read: How to Run Docker as non root user without sudo command

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