docs: auto generate pouch cli/api docs via code

CONTRIBUTORS

@@ -11,6 +11,7 @@ allen.wang <allen.wq@alipay.com>
 bvwells <b.v.wells@gmail.com>
 Ce Gao <ce.gao@outlook.com>
 chenzhimin <1141685075@qq.com>
+Chuanyun Li <lcy041536@gmail.com>
 Cindy <176425810@qq.com>
 CodeJuan <CodeJuan@users.noreply.github.com>
 codejuan <xh@decbug.com>

docs/commandline/pouch_network.md

@@ -29,6 +29,7 @@ pouch network [command]
 ### SEE ALSO
 
 * [pouch](pouch.md)	 - An efficient container engine
+* [pouch network connect](pouch_network_connect.md)	 - Connect a container to a network
 * [pouch network create](pouch_network_create.md)	 - Create a pouch network
 * [pouch network disconnect](pouch_network_disconnect.md)	 - Disconnect a container from a network
 * [pouch network inspect](pouch_network_inspect.md)	 - Inspect one or more pouch networks

docs/commandline/pouch_network_connect.md

@@ -0,0 +1,44 @@
+## pouch network connect
+
+Connect a container to a network
+
+### Synopsis
+
+Connect a container to a network in pouchd. It must specify network's name and container's name.
+
+```
+pouch network connect [OPTIONS] NETWORK CONTAINER
+```
+
+### Examples
+
+```
+$ pouch network connect net1 container1
+container container1 is connected to network net1
+```
+
+### Options
+
+```
+      --alias strings           Add network-scoped alias for the container
+  -h, --help                    help for connect
+      --ip string               IP Address
+      --ip6 string              IPv6 Address
+      --link strings            Add link to another container
+      --link-local-ip strings   Add a link-local address for the container
+```
+
+### Options inherited from parent commands
+
+```
+  -H, --host string        Specify connecting address of Pouch CLI (default "unix:///var/run/pouchd.sock")
+      --tlscacert string   Specify CA file of TLS
+      --tlscert string     Specify cert file of TLS
+      --tlskey string      Specify key file of TLS
+      --tlsverify          Use TLS and verify remote
+```
+
+### SEE ALSO
+
+* [pouch network](pouch_network.md)	 - Manage pouch networks
+

docs/commandline/pouch_update.md

@@ -32,7 +32,6 @@ $ cat /sys/fs/cgroup/memory/8649804cb63ff9713a2734d99728b9d6d5d1e4d2fbafb2b4dbdf
       --cpuset-mems string      MEMs in cpuset
   -e, --env strings             Set environment variables for container
   -h, --help                    help for update
-      --image string            Image of container
   -l, --label strings           Set label for container
   -m, --memory string           Container memory limit
       --memory-swap string      Container swap limit