Install Docker Linux 18.04

Back in 2017, Docker introduced two different versions of its platform: Docker-CE and Docker-EE. But do you know their differences?

Aug 27, 2019 Docker is a containerization technology that allows you to quickly build, test and deploy applications as portable, self-sufficient containers that can run virtually anywhere. In this tutorial, we'll cover how to install Docker on Ubuntu 18.04 and explore the basic Docker concepts and commands. Oct 03, 2021 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. Oct 22, 2018 Step 3: Install Docker on Ubuntu 18.04. To install Docker on Ubuntu, in the terminal window enter the command: sudo apt install docker.io Step 4: Start and Automate Docker. The Docker service needs to be setup to run at startup. To do so, type in each command followed by enter: sudo systemctl start docker sudo systemctl enable docker.

Jul 07, 2020 Instructions based on docs.docker.com. Install Docker EE on Ubuntu 18.04 Install using Mirantis Launchpad CLI. To work with Docker EE you need a trial/purchased version. Docker disabled the option to get a trial subscription on their website, and now you need to contact their sales team to get a trial account.

Docker CE (Community Edition) is the classical OSS (Open Source Software) Docker Engine. Includes the full Docker platform and is great for developers and DIY ops teams starting to build container apps.

If you are an avid developer like I am, you've probably been using Docker for a while. And I would say that most likely this is the version you've worked with, simply because it's free!

Docker EE, on the other hand, is a premium version of CE. It comes with all CE capabilities plus many enterprise level features.

Anything that comes with premium is not free right? So it goes from $750/month basic plan to $2000/month advanced plan. Anyway the prices are on par with what you would expect from enterprise products.

Please get in touch with their sales team to check the most up-to-date prices.

Docker CE vs EE - the Details

Let's do a quick comparison between Docker EE and Docker CE interest over time:

Now Docker EE vs Docker CE vs Docker:

From my experience, users who are searching for just Docker are looking for the CE edition. This shows us that Docker EE is used much less. But I'm certain that there are robust use cases where it makes sense to use it.

Since I'm an open source enthusiast all my experience comes from using the Docker CE edition, so writing this article was a wonderful experience getting to play with Docker EE.

After that quick introduction, let's get our hands dirty.

Prepare the Ubuntu 18.04 machine


As the first step, we will get the soil ready by running some common commands.

All the commands will be executed on a fresh Ubuntu 18.04 machine, and this time I've chosen Google Cloud Platform as the demonstrating environment.

Create the Virtual Machine

Let's start by creating a fresh VM using Ubuntu 18.04 image:

Now connect to it using ssh:

Set up commons dependencies:

Install Docker CE on Ubuntu 18.04

Install from https://get.docker.com

The install script lets you quickly install the latest Docker-CE releases on the supported linux distros. I don't recommend depending on this script for deployment to production systems. From docker-install:

The beauty of this command is that it will check your linux distro and run the right instructions to get Docker CE running for you.

You can test that everything is OK by running:

Install from Docker repository

This one has more step, but is the recommended approach from Docker's official docs (we even check their GPG key fingerprint).

First, add Docker’s official GPG key:

Then verify the key's fingerprint:

Look for the fingerprint 9DC8 5822 9FC7 DD38 854A E2D8 8D81 803C 0EBF CD88. This makes sure the key has not been tempered with.

Next, set up a docker stable repository:

The $(lsb_release -cs) command returns the Ubuntu distribution. In our case we used bionic.

Now install Docker Engine:

And test that everything is OK by running:

Instructions based on docs.docker.com.

Install Docker EE on Ubuntu 18.04

Install using Mirantis Launchpad CLI

To work with Docker EE you need a trial/purchased version. Docker disabled the option to get a trial subscription on their website, and now you need to contact their sales team to get a trial account.

Looking around I found out that, since Mirantis acquired Docker Enterprise, the way to get a Docker EE trial account has changed. You need to go to the Mirantis website and, after applying, you can download it right away.

At the time of this writing the installer is currently beta software. If there's a different way to install Docker EE, please get in touch. I would love to improve this article!

The Mirantis Launchpad CLI tool ('launchpad') is the new, better way to evaluate and experience Docker Enterprise (check out launchpad GitHub).

Download Launchpad CLI

Start by Downloading Launchpad. For Ubuntu 18.04 I used the launchpad-darwin-x64 version.

If you didn't download it from the Virtual Machine, here's a command to upload it to it:

Next, verify the installation:

Then register your user:

The information provided via registration is used to assign evaluation licenses and for providing assistance for the usage of the product.

Next, set up your cluster.yaml config.

This step was the one that took the most time for me. You need to set up 3 machines:

  • Admin machine: The one where you are executing the launchpad command.
  • Worker machine: Will be running your workloads.
  • Manager machine: Contains the admin dashboard, where you have access to many configs and metrics.

They did a great job with the Go launchpad binary. The tricky parts are within the infrastructure setup. Fortunately they already have some terraform scripts to help with it.

Since at the time of this writing there was no option for GCP, I had to setup the infrastructure manually. The Admin machine connects to the Worker and Manager nodes to setup many steps, so make sure you have the ssh keys correctly set up.

The ssh keys step took me some time to figure out, and I even opened an issue in their repo, but then I quickly solved it. So if you have a similar issue, make sure you check it out.

There's a really detailed documentation about each attribute you can use in the config file.

Now it's time to bootstrap your cluster.

Once you have the cluster.yaml config set up, you can run the apply command:

You should see something like this:

Running phase: Install Docker EE Engine on the hosts

Linux

This is where I can say that they did a really good job abstracting all the setup steps.

Install Docker Linux 18.04

There are 37 steps that the Go launchpad binary executes.

18.04

At the end you should see a message like this:

Now, to test that everything is OK, go into the cluster admin UI:

After logging in, you are presented the cluster admin UI:

I played a little with some of its features, and overall they are great. They provide easy to usage Access Controls and Certified Docker images.

These instructions are based on this getting-started guide.

Wrapping up

In this article we saw how to set up Docker on Ubuntu 18.04 for both CE and EE versions.

And since Mirantis has acquired Docker Enterprise, we found out that Launchpad is the latest way for customers looking to try out Docker Enterprise licenses.

Overall the developer/deployment experience is really good, since almost all steps to get an environment ready for Docker EE are automated. And Docker seems to be looking to increasingly automate this process, so that is really nice!

* Illustrations by Icons 8 from Icons8

If you found this helpful, or wish to challenge or extend anything raised here, feel free to contact me on Twitter or Linkedin. Let's connect!

Estimated reading time: 10 minutes

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 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:

Install Docker Linux 18.04 64-bit

  • Ubuntu Groovy 20.10
  • Ubuntu Focal 20.04 (LTS)
  • Ubuntu Bionic 18.04 (LTS)
  • Ubuntu Xenial 16.04 (LTS)
  1. Installing Docker on Ubuntu 20.04. To use the latest version of Docker, we will install it from the official Docker repository. So, start by adding the GPG key for the official Docker repository to your system, after that add the repository configuration to the APT source with the following commands.
  2. Jun 10, 2019 Step by Step Tutorial on How to Install Docker Compose on Ubuntu 18.04. Also, learn to create and manage new containers using Docker Compose applications.
  3. In order to install Prometheus on Docker, you will need to have sudo rights on your host. If you are not sure about it, run the following command $ sudo -v 1. Installing Docker on Ubuntu. Before installing Prometheus on Docker, it is important that Docker is already correctly installed and configured on your instance.
  4. Docker is a software package that creates containers for application development. Learn how to Install Docker on Ubuntu 18.04 in this tutorial.

Docker Engine is supported on x86_64 (or amd64), armhf, and arm64 architectures.

Uninstall old versions

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

  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 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 Linux 18.04 Update

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

Install Docker Linux 18.04 32-bit

  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 Linux 18.04

Ubuntu

You must delete any edited configuration files manually.

Next steps

Ubuntu 18.04 Download Iso 64-bit

Install Docker Linux 18.04 Free

  • Continue to Post-installation steps for Linux.
  • Review the topics in Develop with Docker to learn how to build new applications using Docker.

Ubuntu 18.04 I386 Iso

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