Prettify Docker '/etc/network/interfaces' file. Ref #2040

gns3server/compute/docker/docker_vm.py

@@ -294,7 +294,7 @@ class DockerVM(BaseNode):
         if not os.path.exists(os.path.join(path, "interfaces")):
             with open(os.path.join(path, "interfaces"), "w+") as f:
                 f.write("""#
-# This is a sample network config uncomment lines to configure the network
+# This is a sample network config, please uncomment lines to configure the network
 #
 
 """)
@@ -309,8 +309,9 @@ class DockerVM(BaseNode):
 #\tup echo nameserver 192.168.{adapter}.1 > /etc/resolv.conf
 
 # DHCP config for eth{adapter}
-# auto eth{adapter}
-# iface eth{adapter} inet dhcp""".format(adapter=adapter))
+#auto eth{adapter}
+#iface eth{adapter} inet dhcp
+""".format(adapter=adapter))
         return path
 
     async def create(self):