improve example run commands in docker_guide

When bootstrapping a cluster, the docker run command is mostly the same for all cluster member. This commits highlight the small variations between the commands to make them stand out.

Documentation/v2/docker_guide.md

@@ -44,48 +44,48 @@ The main difference being the value used for the `-initial-cluster` flag, which
 
 ### etcd0
 
-```
+<pre>
 docker run -d -v /usr/share/ca-certificates/:/etc/ssl/certs -p 4001:4001 -p 2380:2380 -p 2379:2379 \
  --name etcd quay.io/coreos/etcd \
- -name etcd0 \
- -advertise-client-urls http://192.168.12.50:2379,http://192.168.12.50:4001 \
+ <b>-name etcd0</b> \
+ <b>-advertise-client-urls http://192.168.12.50:2379,http://192.168.12.50:4001</b> \
  -listen-client-urls http://0.0.0.0:2379,http://0.0.0.0:4001 \
- -initial-advertise-peer-urls http://192.168.12.50:2380 \
+ <b>-initial-advertise-peer-urls http://192.168.12.50:2380</b> \
  -listen-peer-urls http://0.0.0.0:2380 \
  -initial-cluster-token etcd-cluster-1 \
  -initial-cluster etcd0=http://192.168.12.50:2380,etcd1=http://192.168.12.51:2380,etcd2=http://192.168.12.52:2380 \
  -initial-cluster-state new
-```
+</pre>
 
 ### etcd1
 
-```
+<pre>
 docker run -d -v /usr/share/ca-certificates/:/etc/ssl/certs -p 4001:4001 -p 2380:2380 -p 2379:2379 \
  --name etcd quay.io/coreos/etcd \
- -name etcd1 \
- -advertise-client-urls http://192.168.12.51:2379,http://192.168.12.51:4001 \
+ <b>-name etcd1</b> \
+ <b>-advertise-client-urls http://192.168.12.51:2379,http://192.168.12.51:4001</b> \
  -listen-client-urls http://0.0.0.0:2379,http://0.0.0.0:4001 \
- -initial-advertise-peer-urls http://192.168.12.51:2380 \
+ <b>-initial-advertise-peer-urls http://192.168.12.51:2380</b> \
  -listen-peer-urls http://0.0.0.0:2380 \
  -initial-cluster-token etcd-cluster-1 \
  -initial-cluster etcd0=http://192.168.12.50:2380,etcd1=http://192.168.12.51:2380,etcd2=http://192.168.12.52:2380 \
  -initial-cluster-state new
-```
+</pre>
 
 ### etcd2
 
-```
+<pre>
 docker run -d -v /usr/share/ca-certificates/:/etc/ssl/certs -p 4001:4001 -p 2380:2380 -p 2379:2379 \
  --name etcd quay.io/coreos/etcd \
- -name etcd2 \
- -advertise-client-urls http://192.168.12.52:2379,http://192.168.12.52:4001 \
+ <b>-name etcd2</b> \
+ <b>-advertise-client-urls http://192.168.12.52:2379,http://192.168.12.52:4001</b> \
  -listen-client-urls http://0.0.0.0:2379,http://0.0.0.0:4001 \
- -initial-advertise-peer-urls http://192.168.12.52:2380 \
+ <b>-initial-advertise-peer-urls http://192.168.12.52:2380</b> \
  -listen-peer-urls http://0.0.0.0:2380 \
  -initial-cluster-token etcd-cluster-1 \
  -initial-cluster etcd0=http://192.168.12.50:2380,etcd1=http://192.168.12.51:2380,etcd2=http://192.168.12.52:2380 \
  -initial-cluster-state new
-```
+</pre>
 
 Once the cluster has been bootstrapped etcd clients can be configured with a list of etcd members: