Merge pull request #708 from docker/fix_aci_e2e

Fix ACI e2e : now we support passing commands, set `--domainname` before the image in the cmd

tests/aci-e2e/e2e-aci_test.go

@@ -363,9 +363,9 @@ func TestContainerRunAttached(t *testing.T) {
 			"--restart", "on-failure",
 			"--memory", "0.1G", "--cpus", "0.1",
 			"-p", "80:80",
-			"nginx",
 			"--domainname",
 			dnsLabelName,
+			"nginx",
 		)
 		followLogsProcess = icmd.StartCmd(cmd)