Docker and deleted rules in iptables

Hi!

I am running docker on a Linux Ubunut server. I accidentally deleted all rules in the iptable using iptable -F - I know that’s studid :see_no_evil:. I am not sure how to add all the rules docker needs. Since there are several containers running I think it is not a wise idea to reinstall docker so that the docker daemon will do his magic. Since the apps running in the container can’t be reached by the browser I need some help to solve this quickly.
Thanks Barbara