In practice to start a container I do:
docker run a8asd8f9asdf0
If thats the case, what does:
docker start
daniele3004's answer is already pretty good.
Just a quick and dirty formula for people like me who mixes up run and start from time to time:
run
start
docker run [...] = docker pull [...] + docker start [...]
docker run [...]
docker pull [...]
docker start [...]