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Adds instruction about UDP port redirection
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@ -8,7 +8,7 @@
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Port redirection
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================
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Docker can redirect public TCP ports to your container, so it can be
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Docker can redirect public TCP and UDP ports to your container, so it can be
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reached over the network. Port redirection is done on ``docker run``
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using the -p flag.
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@ -25,6 +25,12 @@ will be allocated.
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# PUBLIC port 80 is redirected to PRIVATE port 80
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sudo docker run -p 80:80 <image> <cmd>
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To redirect a UDP port the redirection must be expressed as *PUBLIC:PRIVATE/udp*:
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.. code-block:: bash
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# PUBLIC port 5300 is redirected to the PRIVATE port 53 using UDP
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sudo docker run -p 5300:53/udp <image> <cmd>
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Default port redirects can be built into a container with the
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``EXPOSE`` build command.
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