docker start container
$ docker start my_container
docker run command on container
sudo docker exec -it <container name> <command>
how to start docker
systemctl start docker.service
#(OR)
systemctl start docker
# it will start docker
start a docker container
$ docker start <container_id>
docker start container
docker start -a <container_id>
docker run restart always
$ docker run --restart=always redis