Docker installation. Give the below commands one by one. apt install docker-cli apt install docker.io After the installation is complete, if you are inside wsl then give this command to start docker, because inside wsl systemd (systemctl) does not work: service docker start WSL troubleshooting : If the above command " service docker start " does not work then use below command: dockerd (It may not work if any previous docker process is running. It will show you pid of that process. Use this command to kill that process " kill -9 pid " and run dockerd command again) If " docker ps -a " giving error like " Cannot connect to the Docker daemon at unix:///run/podman/podman.sock. Is the docker daemon running? " This is because you may installed podman-docker package. If you remove the package still you will get this error but you should remove the package. Then issue this command: env | grep -i docker DOCKER_HOST=unix:///run/podman/podman.sock -->...