title: Ping: command not found when using hyperledger fabric image
body: <p>I am a beginner to docker.Please correct me if anything wrong.</p>
  
  <p>As shown in this docker swarm tutorial <a href="https://www.youtube.com/watch?v=nGSNULpHHZc" rel="nofollow noreferrer">https://www.youtube.com/watch?v=nGSNULpHHZc</a> , i am trying to setup multhost setup for my hyperledger fabric application.</p>
  
  <p>I am using two oracle linux servers namely server 1 and server 2.
  I connected both the servers using the docker swarm as managers and created overlay network called my-net.</p>
  
  <p>I followed the same syntax given in the above mentioned tutorial and created the service using the beolw mentioned syntax.</p>
  
  <p><strong>docker service create --name myservice --network my-net --replicas 2 alpine sleep 1d</strong></p>
  
  <p>As expected it created one conatianer in each the server.
  Say for example server 1 coantainer IP is 10.0.0.4 and server 2 container IP 10.0.0.5.
  Now, i am trying to ping from the second servers container to first server's container as shown below and it is pinging.</p>
  
  <p># docker exec -it ContainerID sh<br/>
  / # ping 10.0.0.4<br/>
  PING 10.0.0.4 (10.0.0.4): 56 data bytes<br/>
  64 bytes from 10.0.0.4: seq=0 ttl=64 time=0.082 ms<br/>
  64 bytes from 10.0.0.4: seq=1 ttl=64 time=0.062 ms<br/>
  64 bytes from 10.0.0.4: seq=2 ttl=64 time=0.067 ms<br/>
  ^C<br/>
  --- 10.0.0.4 ping statistics ---<br/>
  3 packets transmitted, 3 packets received, 0% packet loss<br/>
  round-trip min/avg/max = 0.062/0.070/0.082 ms<br/></p>
  
  <p>Now, I am trying to create my service(1) using the beolw mentioned syntax.</p>
  
  <p><strong>docker service create --name myservice1 --network my-net --replicas 2 hyperledger/fabric-peer sleep 1d</strong></p>
  
  <p>As expected this also created one conatianer in each the server.
  Say for example server 1 coantainer IP is 10.0.0.6 and server 2 container IP 10.0.0.7.
  Now, I am trying to ping from the second servers container to first server's container as shown below.
  This time i am getting ping not found error,<br/>
   # docker exec -it ContainerID sh<br/>
   # ping 10.0.0.6<br/>
  sh: 1: ping: not found<br/></p>
  
  <p>Can anyone please help what is the problem with the second myservice1.</p>