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Merge pull request #15450 from liubin/liubin/change-port-number-through-example

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change port number through example context
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moxiegirl 2015-08-12 09:49:50 -07:00
commit 8a0efadee1
1 changed files with 4 additions and 4 deletions
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8
docs/userguide/dockerlinks.md
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@ -227,11 +227,11 @@ The components in this prefix are:
Docker uses this prefix format to define three distinct environment variables:
* The `prefix_ADDR` variable contains the IP Address from the URL, for
example `WEBDB_PORT_8080_TCP_ADDR=172.17.0.82`.
example `WEBDB_PORT_5432_TCP_ADDR=172.17.0.82`.
* The `prefix_PORT` variable contains just the port number from the URL for
example `WEBDB_PORT_8080_TCP_PORT=8080`.
example `WEBDB_PORT_5432_TCP_PORT=5432`.
* The `prefix_PROTO` variable contains just the protocol from the URL for
example `WEBDB_PORT_8080_TCP_PROTO=tcp`.
example `WEBDB_PORT_5432_TCP_PROTO=tcp`.
If the container exposes multiple ports, an environment variable set is
defined for each one. This means, for example, if a container exposes 4 ports
@ -240,7 +240,7 @@ that Docker creates 12 environment variables, 3 for each port.
Additionally, Docker creates an environment variable called `<alias>_PORT`.
This variable contains the URL of the source container's first exposed port.
The 'first' port is defined as the exposed port with the lowest number.
For example, consider the `WEBDB_PORT=tcp://172.17.0.82:8080` variable. If
For example, consider the `WEBDB_PORT=tcp://172.17.0.82:5432` variable. If
that port is used for both tcp and udp, then the tcp one is specified.
Finally, Docker also exposes each Docker originated environment variable