docker-networking

To expose just one port, this is what you need to do: docker run -p <host_port>:<container_port> To expose multiple ports, simply provide multiple -p arguments: docker run -p <host_port1>:<container_port1> -p <host_port2>:<container_port2>

As found here, I got this to work with docker-compose. Save as docker-compose.yml: version: ‘3’ services: outgoing-wont-work: image: alpine networks: – no-internet command: ping -c 3 google.com # will crash internal-will-work: image: alpine networks: – no-internet command: ping -c 3 internal-and-external internal-and-external: image: alpine networks: – no-internet – internet command: ping -c 3 google.com networks: … Read more

After the docker installation you have 3 networks by default: docker network ls NETWORK ID NAME DRIVER SCOPE f3be8b1ef7ce bridge bridge local fbff927877c1 host host local 023bb5940080 none null local I’m trying to keep this simple. So if you start a container by default it will be created inside the bridge (docker0) network. $ docker … Read more