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Explain 'json' function a bit better 

Signed-off-by: Bryan Boreham <bjboreham@gmail.com>
This commit is contained in:
Bryan Boreham 2015-12-15 13:35:55 +00:00 committed by Tibor Vass
parent e5b94ba3ef
commit 1b77149fd4
1 changed files with 6 additions and 6 deletions
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12
docs/reference/commandline/inspect.md
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@ -65,11 +65,11 @@ the `HostPort` field to get the public address.
$ docker inspect --format='{{(index (index .NetworkSettings.Ports "8787/tcp") 0).HostPort}}' $INSTANCE_ID
**Get config:**
**Get a subsection in JSON format:**
The `.Field` syntax doesn't work when the field contains JSON data, but
the template language's custom `json` function does. The `.config`
section contains complex JSON object, so to grab it as JSON, you use
`json` to convert the configuration object into JSON.
If you request a field which is itself a structure containing other
fields, by default you get a Go-style dump of the inner values.
Docker adds a template function, `json`, which can be applied to get
results in JSON format.
$ docker inspect --format='{{json .config}}' $INSTANCE_ID
$ docker inspect --format='{{json .Config}}' $INSTANCE_ID