From the first glance, `docker logs --tail 0` does not make sense,
as it is supposed to produce no output, but `tail -n 0` from GNU
coreutils is working like that, plus there is even a test case
(`TestLogsTail` in integration-cli/docker_cli_logs_test.go).
Now, something like `docker logs --follow --tail 0` makes total
sense, so let's make it work.
(NOTE if --tail is not used, config.Tail is set to -1)
Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>
(cherry picked from commit dd4bfe30a8)
Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>
0375566412