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Consider:
docker run -p 5000:5000 -v /host/:/host appimage
it forwards 5000 to 50000
even in multiple:
docker run -p 5000:5000 -p 5001:5001 -v /host/:/host appimage
What I want to know is:
docker run -p allports:allports
is there any command available that allows to forward all ports in container? Because in my case I am running flask app. For testing purpose I want to run multiple flask instances. So for each flask instance I want to run it in different ports. This auto multi-port forwarding would help.
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To make a port available to services outside of Docker, or to Docker containers which are not connected to the container's network, use the --publish or -p flag. This creates a firewall rule which maps a container port to a port on the Docker host to the outside world.
You can change the port mapping by directly editing the hostconfig. json file at /var/lib/docker/containers/[hash_of_the_containerhash_of_the_containerIn computer science, a container is a class or a data structure whose instances are collections of other objects. In other words, they store objects in an organized way that follows specific access rules. The size of the container depends on the number of objects (elements) it contains.https://en.wikipedia.org › wiki › Container_(abstract_data_type)Container (abstract data type) - Wikipedia]/hostconfig. json or /var/snap/docker/common/var-lib-docker/containers/[hash_of_the_container]/hostconfig.
Exposing multiple ports in the same service Your service exposes only a single port, but services can also support multiple ports. For example, if your pods listened on two ports—let's say 8080 for HTTP and 8443 for HTTPS—you could use a single service to forward both port 80 and 443 to the pod's ports 8080 and 8443.
You can expose a range of ports using the -p option, for example:
docker run -p 2000-5000:2000-5000 -v /host/:/host appimage
See the docker run reference documentation for more details.
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You might have a working set-up by using docker run --net host ..., in which case host's network is directly exposed to the continer and all port bindings are "public". I haven't tested this with multiple containers simultaneously but it might work just fine.
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