Restore missing ps example for killed containers
This example was added in
but got lost during splitting up the cli.md docs into separate files;
This restores the missing example.
@@ -138,6 +138,23 @@ ea09c3c82f6e registry:latest /srv/run.sh 2 weeks ago
48ee228c9464 fedora:20 bash 2 weeks ago Exited (0) 2 weeks ago tender_torvalds
```
+#### Killed containers
+
+You can use a filter to locate containers that exited with status of `137`
+meaning a `SIGKILL(9)` killed them.
+
+```bash
+$ 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 result in a `137` status:
+
+* the `init` process of the container is killed manually
+* `docker kill` kills the container
+* Docker daemon restarts which kills all running containers
+
#### Status
The `status` filter matches containers by status. You can filter using
