Docker Compose: simple firewall using Bash and labels
It has been a long time since I wanted to control connections from/to Docker containers but I could never find a simple enough solutions. We can control reverse proxy settings (Traefik) using labels but we can’t apply iptables rules with them? Nonsense. If you add to this that every container lives in a namespace, and namespaces can have their iptables rules, you have there an easy solution. So I wrote a Bash script that listen to Docker events....