@@ -207,8 +207,8 @@ func (daemon *Daemon) register(container *Container, updateSuffixarray bool) err

 	if container.IsRunning() {

 		logrus.Debugf("killing old running container %s", container.ID)

-

-		container.SetStopped(&execdriver.ExitStatus{ExitCode: 0})

+		// Set exit code to 128 + SIGKILL (9) to properly represent unsuccessful exit

+		container.SetStopped(&execdriver.ExitStatus{ExitCode: 137})

 		// use the current driver and ensure that the container is dead x.x

 		cmd := &execdriver.Command{

@@ -1845,6 +1845,21 @@ The currently supported filters are:

 This shows all the containers that have exited with status of '0'

+##### Killed containers

+

+You can use a filter to locate containers that exited with status of `137` meaning a `SIGKILL(9)` killed them.

+

+    $ docker ps -a --filter 'exited=137'

+    CONTAINER ID        IMAGE               COMMAND                CREATED             STATUS                       PORTS               NAMES

+    b3e1c0ed5bfe        ubuntu:latest       "sleep 1000"           12 seconds ago      Exited (137) 5 seconds ago                       grave_kowalevski

+    a2eb5558d669        redis:latest        "/entrypoint.sh redi   2 hours ago         Exited (137) 2 hours ago                         sharp_lalande

+

+Any of these events a result in `137` status:

+

+* the `init` process of the container is killed manually

+* `docker kill` kills the container

+* Docker daemon restarts which kills all old running containers

+

 ## pull

     Usage: docker pull [OPTIONS] NAME[:TAG] | [REGISTRY_HOST[:REGISTRY_PORT]/]NAME[:TAG]