Currently running the e2e tests produces a warning/error:
$ make -f docker.Makefile test-e2e
«...»
docker run --rm -v /var/run/docker.sock:/var/run/docker.sock docker-cli-e2e
./scripts/test/e2e/run: line 20: test: : integer expression expected
This is from:
test "${DOCKERD_EXPERIMENTAL:-}" -eq "1" && «...»
Where `${DOCKERD_EXPERIMENTAL:-}` expands to the empty string, resulting in
`test "" -eq "1"` which produces the warning. This error is enough to trigger
the short-circuiting behaviour of `&&` so the result is as expected, but fix
the issue nonetheless by provdiing a default `0`.
Signed-off-by: Ian Campbell <ijc@docker.com>
4f483276cf