Docker 20.10.0-beta1 install ubuntu 20.04

Docker 20.10.0 beta is available now. Change log is here

For install on ubuntu execute this.

apt-get update
apt-get install -y apt-transport-https ca-certificates curl gnupg-agent software-properties-common
curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -
add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/ubuntu $(lsb_release -cs) test"
apt-get update
apt-get install -y docker-ce docker-ce-cli containerd.io

Create docker config with default network,default-shm-size

if [[ ! -f "/etc/docker/daemon.json" ]];then
cat << OEF> /etc/docker/daemon.json
{
  "data-root": "/var/lib/docker",
  "default-shm-size": "128M",
  "metrics-addr": "127.0.0.1:9323",
  "experimental": true,
  "default-address-pools":
  [
    {
     "base":"172.22.0.0/16",
     "size":24
    }
  ]
}
OEF
fi

Reload daemon’s.

systemctl daemon-reload ; systemctl restart docker
systemctl unmask docker;systemctl enable docker

See docker status

docker info

Add swap limit support for docker

if [[ ! -f "/etc/default/grub.d/50-cloudimg-settings.cfg" ]];then
cat << OEF > /etc/default/grub.d/50-cloudimg-settings.cfg
GRUB_CMDLINE_LINUX_DEFAULT="console=ttyS0 cgroup_enable=memory swapaccount=1"
OEF
update-grub
fi

Reboot vm.

PROFIT!!!

How add nodes workers and managers see here