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b194252d80
This fix tries to fix the issue in 30279 where `docker ps --format`
fails if `.Label` has args. For example:
```
docker ps --format '{{.ID}}\t{{.Names}}\t{{.Label "some.label"}}'
```
The reason for the failure is that during the preprocessing phase
to detect the existance of `.Size`, the `listOptionsProcessor`
does not has a method of `Label(name string) string`.
This results in the failure of
```
template: :1:24: executing "" at <.Label>: Label is not a method but has arguments
```
This fix fixes the issue by adding needed method of `Label(name string) string`.
This fix fixes 30279.
Signed-off-by: Yong Tang <yong.tang.github@outlook.com>
(cherry picked from commit
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|---|---|---|
| .. | ||
| bundlefile | ||
| checkpoint | ||
| commands | ||
| container | ||
| formatter | ||
| idresolver | ||
| image | ||
| inspect | ||
| network | ||
| node | ||
| plugin | ||
| prune | ||
| registry | ||
| secret | ||
| service | ||
| stack | ||
| swarm | ||
| system | ||
| task | ||
| volume | ||
| cli.go | ||
| events_utils.go | ||
| in.go | ||
| out.go | ||
| registry.go | ||
| trust.go | ||
| utils.go | ||