tell blockexplorer to run on port 8080 (#3237)

* tell blockexplorer to run on port 8080

* forward port 80 to 5000 for a blockexplorer node

net/gce.sh

@@ -480,6 +480,7 @@ $(
     install-nodejs.sh \
     install-redis.sh \
     install-rsync.sh \
+    install-socat.sh \
     network-config.sh \
     remove-docker-interface.sh \
 

net/remote/remote-node.sh

@@ -116,6 +116,7 @@ local|tar)
     if [[ $nodeType = blockstreamer ]]; then
       npm install @solana/blockexplorer@1
       npx solana-blockexplorer > blockexplorer.log 2>&1 &
+      sudo socat TCP-LISTEN:80,reuseaddr,fork,su=nobody TCP:localhost:5000
     fi
     ./multinode-demo/fullnode.sh "${args[@]}" "$entrypointIp":~/solana "$entrypointIp:8001" > fullnode.log 2>&1 &
     ;;

net/scripts/install-socat.sh

@@ -0,0 +1,10 @@
+#!/usr/bin/env bash
+#
+# socat setup for
+#
+set -ex
+
+[[ $(uname) = Linux ]] || exit 1
+[[ $USER = root ]] || exit 1
+
+apt-get --assume-yes install socat