Looks like -i (together with DOCKER_INCREMENTAL_BINARY etc)
were used to get faster incremental builds.
Nowdays (since Go 1.10) this is no longer the case, as
go build cache is used [1]. Here's a quote:
> You do not have to use "go test -i" or "go build -i" or
> "go install" just to get fast incremental builds. We will
> not have to teach new users those workarounds anymore.
> Everything will just be fast.
To enable go cache between builds, add a volume for /root/.cache.
[1] https://groups.google.com/forum/#!msg/golang-dev/qfa3mHN4ZPA/X2UzjNV1BAAJ
Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>
(cherry picked from commit bdcd81d3301a053eefc320de16ac842ec47ed459)
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
Upstream-commit: 0f190f798f7b9f90bd008fe8fb0fc087ec965642
Component: engine
36954599b4