setup default PATH if it is not in the specified env list

[gnawux]

for the issue hyperhq/hyperd#566

Signed-off-by: Wang Xu gnawux@gmail.com

[gnawux]

service will fail

[CNL] call hyper_exec_cmd, json {"container":"hyperstart","process":{"id":"hyperstart-exec-RGxIYXHFtM","terminal":false,"stdio":1,"stderr":2,"args":["ipvsadm","-Ln"],"workdir":"/"}}, len 149

it run outside of the container....

[gnawux]

passed, however, not as small as expected.

[gnawux]

gnawux@shutup:~/Workspace/src/github.com/hyperhq/hyperd$ sudo ./hyperctl run -t gcr.io/google_containers/busybox:1.24 sh -c 'echo hello'
hello
gnawux@shutup:~/Workspace/src/github.com/hyperhq/hyperd$

it works

[feiskyer]

do we also need /sbin and /usr/sbin?

[gnawux]

It's a good question, if the user is root, it's better to include them, otherwise sbin shouldn't be here. The problem is it is not easy to know who is the user at this position. That's part of what I said it is not as simple as I thought.

[gao-feng]

lgtm