Fix solana-test-validator gossip discovery failure with --gossip-host 127.0.0.1

start.sh

@@ -27,6 +27,7 @@ anvil --host 0.0.0.0 --port 8546 --chain-id 30 \
 rm -f /data/solana/ledger.lock
 solana-test-validator \
   --ledger /data/solana \
+  --gossip-host 127.0.0.1 \
   --log \
   > >(tee -a /data/logs/solana.log) 2>&1 &
 SOLANA_PID=$!