Currently, the Docker repos will trigger apt-get errors on a
multiarch-configured deb system because the repos don't contain all
architectures. For example, on a multiarch system supporting amd64 and
armhf, apt-get will look for armhf Docker packages, fail to find them,
and error out.
Fix this by qualifying the repo line with the currently active
architecture.
This fixes issue #18207.
Signed-off-by: Martin Kelly <martin@surround.io>
Upstream-commit: 3e5ac742417dc9461dd090c29ee9971ff0974adb
Component: engine
18fcb12c86