chore(wakucanary): remove port hardcoding + add cli config (#1345)

tools/README.md

@@ -3,6 +3,7 @@
 Attempts to dial a peer and asserts it supports a given set of protocols.
 
 ```console
+./build/wakucanary --help
 Usage:
 
 wakucanary [OPTIONS]...
@@ -14,6 +15,7 @@ The following options are available:
  -p, --protocol       Protocol required to be supported: store,relay,lightpush,filter (can be used
                       multiple times).
  -l, --log-level      Sets the log level [=LogLevel.DEBUG].
+ -np, --node-port      Listening port for waku node [=60000].
 ```
 
 The tool can be built as:

tools/wakucanary/wakucanary.nim

@@ -50,6 +50,12 @@ type
       name: "log-level",
       abbr: "l" .}: LogLevel
 
+    nodePort* {.
+      desc: "Listening port for waku node",
+      defaultValue: 60000,
+      name: "node-port",
+      abbr: "np" }: uint16
+
 
 proc parseCmdArg*(T: type chronos.Duration, p: string): T =
   try:
@@ -112,7 +118,7 @@ proc main(): Future[int] {.async.} =
     node = WakuNode.new(
       nodeKey,
       ValidIpAddress.init("0.0.0.0"),
-      Port(60000),
+      Port(conf.nodePort),
       nameResolver = resolver)
 
   await node.start()