docs: add doc to describe how to use pouch run --log-driver

Signed-off-by: Junjun Li <[email protected]>

docs/features/pouch_with_log_driver.md

@@ -0,0 +1,41 @@
+# PouchContainer with log driver
+
+The PouchContainer has supported the json, syslog log driver to help you retrieve log information from running containers. If you do not specify a log driver, the default is json-file.
+
+You can view the type of log driver by following commands
+
+```
+$ pouch info | grep 'Logging Driver'
+Logging Driver:  json-file
+```
+
+## Configure default log drivers for pouch daemon
+
+```
+$ pouchd --log-driver syslog
+INFO[0000] starting containerd                           module=containerd revision=773c489c9c1b21a6d78b5c538cd395416ec50f88 version=v1.0.3
+INFO[0000] loading plugin "io.containerd.content.v1.content"...  module=containerd type=io.containerd.content.v1
+INFO[0000] loading plugin "io.containerd.snapshotter.v1.btrfs"...  module=containerd type=io.containerd.snapshotter.v1
+...
+```
+
+You can view the default log driver for pouch daemon by following commands
+
+```
+$ pouch info | grep 'Logging Driver'
+Logging Driver: syslog
+```
+
+## Configuring log drivers for containers
+
+```
+$ pouch run --log-driver syslog registry.hub.docker.com/library/centos:7 echo "hello world"
+hello world
+```
+
+You can view the default log driver for running containers by following commands
+
+```
+$ pouch inspect  -f {{.HostConfig.LogConfig}} 09092c
+{syslog map[]}
+```