Daniel, Dao Quang Minh 159f1734a9 expose sorts its ports before saving as comment ...

Saving ports as `map[nat.Port]struct{}` directly has ordering issue which is
more replicatable where we expose a huge number of ports at the same time. As a
result, the cache will be burst whenever the map order is different from the
previous build.
This sorts the ports first and save them as a whitespace-separated list instead
of the map representation, so the order will always be consistent if the port
list isnt changed.

NOTICE: this will burst the old expose caches

Docker-DCO-1.1-Signed-off-by: Daniel, Dao Quang Minh <dqminh89@gmail.com> (github: dqminh)
Upstream-commit: 87d0562c61b80aba05f4c3b4f49f5527afb55989
Component: engine

2014-11-12 09:14:35 -05:00

components/engine

expose sorts its ports before saving as comment

2014-11-12 09:14:35 -05:00

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