From 1dd437ecdcd9eaf7a7d18d8f623bd70b98690a01 Mon Sep 17 00:00:00 2001
From: Bernhard Ehlers <be@bernhard-ehlers.de>
Date: Thu, 3 Mar 2016 09:12:36 +0100
Subject: [PATCH] updated docker command line processing

---
 gns3server/modules/docker/docker_vm.py      | 20 +++++++++++++-------
 gns3server/modules/docker/resources/init.sh |  2 +-
 2 files changed, 14 insertions(+), 8 deletions(-)
 mode change 100644 => 100755 gns3server/modules/docker/resources/init.sh

diff --git a/gns3server/modules/docker/docker_vm.py b/gns3server/modules/docker/docker_vm.py
index 55fc04d5..3ae58910 100644
--- a/gns3server/modules/docker/docker_vm.py
+++ b/gns3server/modules/docker/docker_vm.py
@@ -195,16 +195,22 @@ class DockerVM(BaseVM):
             },
             "Volumes": {},
             "Env": [],
-            "Cmd": image_infos.get("ContainerConfig", {"Cmd": []})["Cmd"]
+            "Cmd": [],
+            "Entrypoint": image_infos.get("Config", {"Entrypoint": []})["Entrypoint"]
         }
 
-        params["Cmd"].insert(0, "/bin/sh")
-        params["Cmd"].insert(1, "/gns3/init.sh")
+
+        if params["Entrypoint"] is None:
+            params["Entrypoint"] = []
         if self._start_command:
-            params["Cmd"] += shlex.split(self._start_command)
-        else:
-            if len(params["Cmd"]) == 2:
-                params["Cmd"] += ["/bin/sh"]
+            params["Cmd"] = shlex.split(self._start_command)
+        if len(params["Cmd"]) == 0:
+            params["Cmd"] = image_infos.get("Config", {"Cmd": []})["Cmd"]
+            if params["Cmd"] is None:
+                params["Cmd"] = []
+        if len(params["Cmd"]) == 0 and len(params["Entrypoint"]) == 0:
+            params["Cmd"] = ["/bin/sh"]
+        params["Entrypoint"].insert(0, "/gns3/init.sh")
 
         if self._environment:
             params["Env"] += [e.strip() for e in self._environment.split("\n")]
diff --git a/gns3server/modules/docker/resources/init.sh b/gns3server/modules/docker/resources/init.sh
old mode 100644
new mode 100755
index d120e395..abd3aa4f
--- a/gns3server/modules/docker/resources/init.sh
+++ b/gns3server/modules/docker/resources/init.sh
@@ -43,4 +43,4 @@ sed -n 's/^ *\(eth[0-9]*\):.*/\1/p' < /proc/net/dev | while read dev; do
 done
 
 # continue normal docker startup
-/bin/sh -c "$@"
+exec "$@"