Upgraded script to check both dependencies

scripts/README.md

@@ -1,11 +1,12 @@
-# Run servers form local binary
+# Run servers from local binary
 
 ## Prerequisites
 
 When deploying with `polybft` consensus, there are some additional dependencies:
 * [npm](https://nodejs.org/en/)
 * [go 1.19.x](https://go.dev/dl/)
 * [jq](https://jqlang.github.io/jq)
+* Netcat (nc)
 
 ## Local development
 Running `polygon-edge` from local binary can be done very easily by using provided `scripts` folder.

scripts/cluster

@@ -1,12 +1,26 @@
 #!/usr/bin/env bash
 
+dp_error_flag=0
+
 # Check if jq is installed
 if [[ "$1" == "polybft" ]] && ! command -v jq >/dev/null 2>&1; then
-  echo "jq is not installed. Please install it manually and run the script again."
+  echo "jq is not installed."
   echo "Manual installation instructions: Visit https://jqlang.github.io/jq/ for more information."
-  exit 1
+  dp_error_flag=1
+fi
+
+# Check if nc is installed
+if [[ "$1" == "polybft" ]] && ! command -v nc >/dev/null 2>&1; then
+  echo "Netcat (nc) is not installed."
+  dp_error_flag=1
 fi
 
+# Stop script if any of the dependencies have failed
+if [[ "$dp_error_flag" -eq 1]]; then
+  echo "Missing dependencies. Please install them and run the script again."
+  exit 1
+fi	
+
 function initIbftConsensus() {
   echo "Running with ibft consensus"
   ./polygon-edge secrets init --insecure --data-dir test-chain- --num 4