How can I expose more than 1 port with Docker?

So I have 3 ports that should be exposed to the machine’s interface. Is it possible to do this with a Docker container?

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  • 3 Solutions collect form web for “How can I expose more than 1 port with Docker?”

    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>
    

    Step1

    In your Dockerfile, you can use the verb EXPOSE to expose multiple ports.
    e.g.

    EXPOSE 3000 80 443 22
    

    Step2

    You then would like to build an new image based on above Dockerfile.
    e.g.

    docker build -t foo:tag .
    

    Step3

    Then you can use the -p to map host port with the container port, as defined in above EXPOSE of Dockerfile.
    e.g.

    docker run -p 3001:3000 -p 23:22
    

    In case you would like to expose a range of continuous ports, you can run docker like this:

    docker run -it -p 7100-7120:7100-7120/tcp 
    

    if you use docker-compose.ymlfile:

    services:
        varnish:
            ports:
                - 80
                - 6081
    

    You can also specify the host/network port

    varnish:
        ports:
            - 80:80
            - 6081:6081
    
    Docker will be the best open platform for developers and sysadmins to build, ship, and run distributed applications.