Resolve #7860 - add time.RFC3339 format

[3sky]

I can't find any other usage of this type, also no unit-tests for that. Sample validation below:

# before
$ podman system service -t 5000 &
$ podman run -d -p 8080:8080 localhost/hello-world
$ curl -s --unix-socket /$XDG_RUNTIME_DIR/podman/podman.sock http://localhost/containers/$(podman ps -q)/json | jq .Created
"2020-10-09 16:24:07.309694324 +0200 CEST"

# after
$ make binaries
$ bin/podman system service -t 5000 &
$ bin/podman run -d -p 8080:8080 localhost/hello-world
$ curl -s --unix-socket /$XDG_RUNTIME_DIR/podman/podman.sock http://localhost/containers/$(podman ps -q)/json | jq .Created
"2020-10-09T16:30:58+02:00"

Signed-off-by: 3sky [email protected]

[rhatdan]

Fixes: #7860

[rhatdan]

Thanks @3sky
LGTM
@containers/podman-maintainers PTAL

[mheon]

The given example string in #7860 was "Created": "2020-09-27T17:01:55.178157437", which is actually RFC3339Nano in Go

[mheon]

Think this should be RFC3339Nano instead

[TomSweeneyRedHat]

nice catch @mheon , I'd to double check, that's what Docker displayes to their logs.

[3sky]

Thanks @mheon! I expected that regular ISO_8601 format can be used. However changed to:

l.CreatedTime().Format(time.RFC3339Nano),

Now output is:

"2020-10-12T08:48:53.855528237+02:00"  

[zhangguanzhang]

maybe need to add a test?

[3sky]

@zhangguanzhang something like this tests here
https://github.com/containers/podman/blob/master/test/apiv2/20-containers.at ?

[zhangguanzhang]

@zhangguanzhang something like this tests here
https://github.com/containers/podman/blob/master/test/apiv2/20-containers.at ?

yes

[rhatdan]

/approve
/lgtm

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