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docker engine installation for debian

# uninstall old packages
for pkg in docker-doc docker-compose podman-docker containerd runc; do sudo apt-get remove $pkg; done

# Add Docker's official GPG key:
sudo apt-get update
sudo apt-get install ca-certificates curl
sudo install -m 0755 -d /etc/apt/keyrings
sudo curl -fsSL -o /etc/apt/keyrings/docker.asc
sudo chmod a+r /etc/apt/keyrings/docker.asc

# Add the repository to Apt sources:
echo \
  "deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/docker.asc] \
  $(. /etc/os-release && echo "$VERSION_CODENAME") stable" | \
  sudo tee /etc/apt/sources.list.d/docker.list > /dev/null
sudo apt-get update

# List the available versions:
apt-cache madison docker-ce | awk '{ print $3 }'

# installing specific version
sudo apt-get install docker-ce=$VERSION_STRING docker-ce-cli=$VERSION_STRING docker-buildx-plugin docker-compose-plugin

# OR, installing latest available
sudo apt-get install docker-ce docker-ce-cli docker-buildx-plugin docker-compose-plugin

To use docker without root privilege, add the user to "docker" group.

sudo usermod -aG docker $USER

docker engine uninstallation for debian

# remove packages
sudo apt-get purge docker-ce docker-ce-cli docker-buildx-plugin docker-compose-plugin docker-ce-rootless-extras

# delete files
sudo rm -rf /var/lib/docker
sudo rm -rf /var/lib/containerd