Fixed sudoers enforcing for docker slaves

Change-Id: I2cff04a8c7d9997de845fe121eadedfa8bb2d249
diff --git a/jenkins/slave/docker.yml b/jenkins/slave/docker.yml
index ea95e73..ea3639b 100644
--- a/jenkins/slave/docker.yml
+++ b/jenkins/slave/docker.yml
@@ -8,10 +8,11 @@
           groups:
             - docker
       sudo:
+        enabled: true
         users:
           jenkins:
             setenv: true
             hosts:
             - ALL
             commands:
-            - docker
\ No newline at end of file
+            - /usr/bin/docker
\ No newline at end of file