How to install docker runtime in runpod/base:0.5.1-cpu container instance

[bidianqing]

run a container instance from runpod/base:0.5.1-cpu image
docker run --name base -it -d runpod/base:0.5.1-cpu

after,into the container
docker exec -it base /bin/bash

I want install docker-ce in the base container ,follow docker doc https://docs.docker.com/engine/install/ubuntu/#install-using-the-repository

apt-get update; \
apt-get install -y sudo \
	ca-certificates \
	vim \
	curl; \
sudo install -m 0755 -d /etc/apt/keyrings; \
sudo curl -fsSL https://download.docker.com/linux/ubuntu/gpg -o /etc/apt/keyrings/docker.asc; \
sudo chmod a+r /etc/apt/keyrings/docker.asc; \
echo \
  "deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/docker.asc] https://download.docker.com/linux/ubuntu \
  $(. /etc/os-release && echo "$VERSION_CODENAME") stable" | \
  sudo tee /etc/apt/sources.list.d/docker.list > /dev/null; \
sudo apt-get update; \
sudo apt-get install -y docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin

my question, docker is not running, please tell me what todo, thanks

[bidianqing]

but, use runpod.io is successful