Provisioned for Docker V2 plugin on multiple architectures, blocked CHECKPOINT, updated docs

website/install/plugin/plugin.md

@@ -20,7 +20,7 @@ See [Launching Weave Net]({{ '/install/using-weave#peer-connections' | relative_
 
 After you've launched Weave Net and peered your hosts,  you can start containers using the following, for example:
 
-    $ docker run --net=weave -ti weaveworks/ubuntu
+    $ docker run --net=weave -ti alpine:latest
 
 on any of the hosts, and they can all communicate with each other
 using any protocol, even multicast.
@@ -29,8 +29,8 @@ In order to use Weave Net's [Service Discovery]({{ '/tasks/weavedns/weavedns' |
 must pass the additional arguments `--dns` and `-dns-search`, for
 which a helper is provided in the Weave script:
 
-    $ docker run --net=weave -h foo.weave.local $(weave dns-args) -tdi weaveworks/ubuntu
-    $ docker run --net=weave -h bar.weave.local $(weave dns-args) -ti weaveworks/ubuntu
+    $ docker run --net=weave -h foo.weave.local $(weave dns-args) -tdi alpine:latest
+    $ docker run --net=weave -h bar.weave.local $(weave dns-args) -ti alpine:latest
     # ping foo
 
 
@@ -43,11 +43,11 @@ Just launch the Weave Net router onto each host and make a peer connection with
 
 then run your containers using the Docker command-line:
 
-    host1$ docker run --net=weave -ti weaveworks/ubuntu
+    host1$ docker run --net=weave -ti alpine:latest
     root@1458e848cd90:/# hostname -i
     10.32.0.2
 
-    host2$ docker run --net=weave -ti weaveworks/ubuntu
+    host2$ docker run --net=weave -ti alpine:latest
     root@8cc4b5dc5722:/# ping 10.32.0.2
 
     PING 10.32.0.2 (10.32.0.2) 56(84) bytes of data.