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Added content to port redirect doc

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Solomon Hykes 2013-06-17 13:25:50 -07:00
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commit 8626598753
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docs/sources/use/port_redirection.rst
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@ -6,18 +6,20 @@
Port redirection
================
Docker can redirect public tcp ports to your container, so it can be reached over the network.
Port redirection is done on ``docker run`` using the -p flag.
Here are the 3 ways to redirect a port:
A port redirect is specified as PUBLIC:PRIVATE, where tcp port PUBLIC will be redirected to
tcp port PRIVATE. As a special case, the public port can be omitted, in which case a random
public port will be allocated.
.. code-block:: bash
# the port 80 in the container is mapped to a random port of the host
# A random PUBLIC port is redirected to PRIVATE port 80 on the container
docker run -p 80 <image> <cmd>
# the port 80 in the container is mapped to the port 80 of the host
docker run -p :80 <image> <cmd>
# PUBLIC port 80 is redirected to PRIVATE port 80
docker run -p 80:80 <image <cmd>
# the port 80 in the container is mapped to the port 5555 of the host
docker run -p 5555:80 <image <cmd>
Default port redirects can be built into a container with the EXPOSE build command.