Quick navigational links:

• # Installing Docker on Ubuntu Hosts
• Pre-Requisites
  • Remove any existing versions
• Methods
  • Installing from the repo
    • Setup the repository
      • Update and prep
      • Add the repository to your system
      • Install the dockery goodness
      • To install a specific version
  • Installing via a package
  • convienience script

This taken from Docker’s instructions for installing Docker

apt-get remove docker docker-engine docker.io containerd runc

Update the apt package index and install packages to allow apt to use a repository over HTTPS:

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apt-get update
apt-get -y install apt-transport-https ca-certificates curl gnupg lsb-release

• Add Docker’s GPG key:

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curl -fsSL https://download.docker.com/linux/ubuntu/gpg | \
sudo gpg --dearmor -o /usr/share/keyrings/docker-archive-keyring.gpg

• Generate and add the apt repo artifact for your architecture:

amd64

Instructions

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

armhf

Instructions

echo "deb [arch=armhf 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

arm64

Instructions

echo "deb [arch=arm64 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

Update the apt package index, and install the latest version of Docker Engine and containerd,

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apt-get update
apt-get install docker-ce docker-ce-cli containerd.io

if you wish to be pedantic:

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apt-get install containerd.io docker-ce docker-ce-cli docker-ce-rootless-extras docker-scan-plugin pigz slirp4netns

To install a specific version of Docker Engine, list the available versions in the repo, then select and install:

a. List the versions available in your repo:

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    apt-cache madison docker-ce

b. Install a specific version using the version string from the second column, for example

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apt-get install docker-ce=<VERSION_STRING> docker-ce-cli=<VERSION_STRING> containerd.io

Custom tweaks

/etc/docker/daemon.json

{ "log-driver": "journald" }

in conjunction with a /etc/systemd/journald.conf config like so:

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[Journal]
Storage=volatile
ForwardToSyslog=yes
Compress=no
SystemMaxUse=auto
SystemMaxFileSize=10M
SystemMaxFiles=100
RuntimeMaxFileSize=10M
RuntimeMaxFiles=100