localnet: expose 6060 (pprof) and 9090 (prometheus) on node0

This removes the need to do it yourself every time you want to debug a
issue or look at Prometheus graphs.

docker-compose.yml

@@ -6,6 +6,8 @@ services:
     image: "tendermint/localnode"
     ports:
       - "26656-26657:26656-26657"
+      - "6060:6060"
+      - "9090:9090"
     environment:
       - ID=0
       - LOG=${LOG:-tendermint.log}

docs/networks/docker-compose.md

@@ -44,6 +44,11 @@ This file creates a 4-node network using the localnode image.
 The nodes of the network expose their P2P and RPC endpoints to the host machine
 on ports 26656-26657, 26659-26660, 26661-26662, and 26663-26664 respectively.
 
+The first node (`node0`) exposes two additional ports: 6060 for profiling using
+[`pprof`](https://golang.org/pkg/net/http/pprof), and `9090` - for Prometheus
+server (if you don't know how to start one check out ["First steps |
+Prometheus"](https://prometheus.io/docs/introduction/first_steps/)).
+
 To update the binary, just rebuild it and restart the nodes:
 
 ```sh

networks/local/localnode/config-template.toml

@@ -1,2 +1,7 @@
 [rpc]
 laddr = "tcp://0.0.0.0:26657"
+pprof-laddr = ":6060"
+
+[instrumentation]
+prometheus = true
+prometheus-listen-addr = ":9090"