This fix is an attempt to address the issue raised in 28339. In
`docker ps`, the formatter needs to expose all fields of `types.Container`
to `preProcessor` so that template could be executed.
This direct exposing is unreliable and could cause issues as user may incorrectly
assume all fields in `types.Container` will be available for templating.
However, the purpose of `preProcessor` is to only find out if `.Size`
is defined (so that opts.size could be set accordingly).
This fix defines `preProcessor` as `map[string]bool` with a func `Size()`.
In this way, any unknown fields will be ignored.
This fix adds several test cases to the existing `TestBuildContainerListOptions`.
This fix fixes 28339.
Signed-off-by: Yong Tang <yong.tang.github@outlook.com>
Upstream-commit: 312cc7eebd326cc500e5742115d1e92e94ff60ee
Component: engine
6c1518dd39