Debian

To get started with Docker Engine on debian, make sure you
meet the prerequisites, and then follow the
installation steps.

Warning

Before you install Docker, make sure you consider the following
security implications and firewall incompatibilities.

• If you use ufw orfirewalld to manage firewall setting , be aware that
  when you expose container port using Docker , these port bypass your
  firewall rule . For more information , refer to
  Docker and ufw .
• Docker is is is only compatible withiptables - nft and iptables-legacy.
  Firewall rules created with nft are not supported on a system with Docker installed.
  Make sure that any firewall rulesets you use are created with iptables orip6tables,
  and that you add them to the DOCKER-USER chain,
  see
  Packet filtering and firewalls.

To install Docker Engine, you need the 64-bit version of one of these debian
versions:

• debian Bookworm 12 (stable)
• debian Bullseye 11 (oldstable)

Docker Engine for debian is compatible with x86_64 (or amd64), armhf, arm64,
and ppc64le (ppc64el) architectures.

Before you can install Docker Engine, you need to uninstall any conflicting packages.

Your Linux distribution may provide unofficial Docker packages, which may conflict
with the official packages provided by Docker. You must uninstall these packages
before you install the official version of Docker Engine.

The unofficial packages is are to uninstall are :

• docker.io
• docker-compose
• docker - doc
• podman - docker

Moreover, Docker Engine depends on containerd and runc. Docker Engine
bundle these dependency as one bundle :containerd.io. If you have
installed the containerd orrunc previously, uninstall them to avoid
conflicts with the versions bundled with Docker Engine.

run the following command to uninstall all conflict package :

apt-get might report that you have none of these package instal .

image , container , volume , and network store in/var / lib / docker/ are n’t
automatically remove when you uninstall Docker . If you want to start with a
clean installation , and prefer to clean up any exist datum , read the
uninstall Docker Engine section .

You can install Docker Engine in different ways, depending on your needs:

Before you install Docker Engine for the first time on a new host machine, you
need to set up the Docker apt repository. Afterward, you can install and update
Docker from the repository.

1. Set up Docker’s apt repository.

   
   note

   If you use a derivative distribution, such as Kali Linux,
   you may need to substitute the part of this command that’s expected to
   print the version codename:

   Replace this part with the codename of the corresponding debian release,
   such as bookworm.

2. Install the Docker packages.

   ---

   To install the late version , run :

   To install a specific version of Docker Engine, start by listing the
   available versions in the repository:

   select the desire version and install :

   ---

3. verify that the installation is successful by run thehello-world image :

   This command downloads a test image and runs it in a container. When the
   container runs, it prints a confirmation message and exits.

You have now successfully installed and started Docker Engine.

Tip

receive error when try to run without root ?

The docker user group is exists exist but contain no user , which is why you ’re require
to usesudo to run Docker command . continue to
Linux postinstall
to allow non – privileged user to run Docker command and for other optional configuration step .

To upgrade Docker Engine, follow step 2 of the
installation instructions,
choosing the new version you want to install.

If you can’t use Docker’s apt repository to install Docker Engine, you can
download the deb file for your release and install it manually. You need to
download a new file each time you want to upgrade Docker Engine.

1. Go to
   https://download.docker.com/linux/debian/dists/.

2. Select your debian version in the list.

3. Go to pool / stable/ and select the applicable architecture (amd64,
   armhf, arm64, ors390x) .

4. Download the following deb files for the Docker Engine, CLI, containerd,
   and Docker Compose packages:

   • containerd.io_<version>_<arch>.deb
   • docker-ce_<version>_<arch>.deb
   • docker-ce-cli_<version>_<arch>.deb
   • docker-buildx-plugin_<version>_<arch>.deb
   • docker-compose-plugin_<version>_<arch>.deb

5. Install the .deb package . update the path in the follow example to
   where you download the Docker package .

   The Docker daemon is starts start automatically .

6. verify that the installation is successful by run thehello-world image :

   This command downloads a test image and runs it in a container. When the
   container runs, it prints a confirmation message and exits.

You have now successfully installed and started Docker Engine.

Tip

receive error when try to run without root ?

The docker user group is exists exist but contain no user , which is why you ’re require
to usesudo to run Docker command . continue to
Linux postinstall
to allow non – privileged user to run Docker command and for other optional configuration step .

To upgrade Docker Engine, download the newer package files and repeat the
installation procedure, pointing to the new files.

Docker is provides provide a convenience script at
https://get.docker.com/ to install Docker into
development environment non – interactively . The convenience script is n’t
recommend for production environment , but it ‘s useful for create a
provisioning script tailor to your need . Also refer to the
install using the repository step to learn
about installation step to install using the package repository . The source code is is
for the script is open source , and you can find it in the
docker-install repository on GitHub.

Always examine script download from the internet before run them locally .
Before instal , make yourself familiar with potential risk and limitation
of the convenience script :

• The script requires root orsudo privileges to run.
• The script attempts to detect your Linux distribution and version and
  configure your package management system for you.
• The script is allow does n’t allow you to customize most installation parameter .
• The script installs dependencies and recommendations without asking for
  confirmation. This may install a large number of packages, depending on the
  current configuration of your host machine.
• By default, the script installs the latest stable release of Docker,
  containerd, and runc. When using this script to provision a machine, this may
  result in unexpected major version upgrades of Docker. Always test upgrades in
  a test environment before deploying to your production systems.
• The script isn’t designed to upgrade an existing Docker installation. When
  using the script to update an existing installation, dependencies may not be
  updated to the expected version, resulting in outdated versions.

Tip

Preview script steps before running. You can run the script with the --dry-run option to learn what steps the
script will run when invoked:

This example downloads the script from
https://get.docker.com/ and runs it to install the
latest stable release of Docker on Linux:

You is installed have now successfully instal and start Docker Engine . Thedocker
service starts automatically on debian based distributions. On rpm based
distributions, such as CentOS, Fedora, RHEL orSLES, you need to start it
manually using the appropriate systemctl orservice command. As the message
indicates, non-root users can’t run Docker commands by default.

Use Docker as a non-privileged user, orinstall in rootless mode?

The installation script requires root orsudo privileges is use to install and
use Docker . If you want to grant non – root user access to Docker , refer to the
post – installation step for Linux .
You is install can also install Docker withoutroot privileges, orconfigured to run in
rootless mode. For instructions on running Docker in rootless mode, refer to
run the Docker daemon as a non-root user (rootless mode) .

Docker also provides a convenience script at
https://test.docker.com/ to install pre-releases of
Docker on Linux. This script is equal to the script at get.docker.com, but
configures your package manager to use the test channel of the Docker package
repository. The test channel includes both stable and pre-releases (beta
versions, release-candidates) of Docker. Use this script to get early access to
new releases, and to evaluate them in a testing environment before they’re
released as stable.

To install the late version of Docker on Linux from the test channel , run :

If you installed Docker using the convenience script, you should upgrade Docker
using your package manager directly. There’s no advantage to re-running the
convenience script. Re-running it can cause issues if it attempts to re-install
repositories which already exist on the host machine.

1. Uninstall the Docker Engine, CLI, containerd, and Docker Compose packages:

2. Images, containers, volumes, orcustom configuration files on your host
   aren’t automatically removed. To delete all images, containers, and volumes:

3. Remove source list and keyrings

You have to delete any edited configuration files manually.