updated the config.sh so that multiple changemakers can be run on each machine easier.

config.sh

@@ -26,6 +26,7 @@ TUNNEL_CONFIG_FILE="$TUNNEL_CONFIG_DIR/tunnel-config.yml"
 SERVICES_YAML="$SCRIPT_DIR/configs/homepage/services.yaml"
 MAIN_HTML="$SCRIPT_DIR/mkdocs/docs/overrides/main.html"
 MAP_ENV_FILE="$SCRIPT_DIR/map/.env"  # Add the map's .env file path
+DOCKER_COMPOSE_FILE="$SCRIPT_DIR/docker-compose.yml"
 
 echo "Looking for .env file at: $ENV_FILE"
 
@@ -651,6 +652,111 @@ EOL
   return 0
 }
 
+# Function to get instance identifier
+get_instance_identifier() {
+  # Try to get from directory name first
+  local dir_name=$(basename "$SCRIPT_DIR")
+  local default_instance=""
+  
+  # Extract potential instance name from directory
+  if [[ "$dir_name" =~ changemaker\.lite\.(.+)$ ]]; then
+    default_instance="${BASH_REMATCH[1]}"
+  elif [[ "$dir_name" != "changemaker.lite" ]]; then
+    default_instance="$dir_name"
+  fi
+  
+  echo ""
+  echo "=== Instance Configuration ==="
+  echo "To run multiple Changemaker instances on the same machine,"
+  echo "each instance needs a unique identifier for containers and networks."
+  echo ""
+  
+  if [ -n "$default_instance" ]; then
+    echo "Detected potential instance name from directory: $default_instance"
+    read -p "Use this instance identifier? [Y/n]: " use_detected
+    if [[ ! "$use_detected" =~ ^[Nn]$ ]]; then
+      echo "$default_instance"
+      return 0
+    fi
+  fi
+  
+  read -p "Enter instance identifier (letters, numbers, hyphens only) [default: main]: " instance_id
+  
+  # Validate and sanitize instance identifier
+  if [ -z "$instance_id" ]; then
+    instance_id="main"
+  fi
+  
+  # Remove invalid characters and convert to lowercase
+  instance_id=$(echo "$instance_id" | tr '[:upper:]' '[:lower:]' | sed 's/[^a-z0-9-]//g')
+  
+  if [ -z "$instance_id" ]; then
+    instance_id="main"
+  fi
+  
+  echo "$instance_id"
+}
+
+# Function to update docker-compose.yml with unique names
+update_docker_compose_names() {
+  local instance_id=$1
+  
+  if [ -z "$instance_id" ] || [ "$instance_id" = "main" ]; then
+    echo "Using default container names (no instance suffix)"
+    return 0
+  fi
+  
+  echo "Updating docker-compose.yml with instance identifier: $instance_id"
+  
+  # Create a backup of the docker-compose.yml file
+  local timestamp=$(date +"%Y%m%d_%H%M%S")
+  local backup_file="${DOCKER_COMPOSE_FILE}.backup_${timestamp}"
+  cp "$DOCKER_COMPOSE_FILE" "$backup_file"
+  echo "Created backup of docker-compose.yml at $backup_file"
+  
+  # Create temporary file for modifications
+  local temp_file=$(mktemp)
+  
+  # Update container names, network names, and volume names
+  sed -e "s/container_name: \([^-]*\)$/container_name: \1-${instance_id}/g" \
+      -e "s/container_name: \([^-]*\)-changemaker$/container_name: \1-changemaker-${instance_id}/g" \
+      -e "s/container_name: \([^-]*\)_\([^-]*\)$/container_name: \1_\2_${instance_id}/g" \
+      -e "s/container_name: \([^-]*\)_\([^-]*\)_changemaker$/container_name: \1_\2_changemaker_${instance_id}/g" \
+      -e "s/networks:/networks:/g" \
+      -e "s/changemaker-lite:/changemaker-lite-${instance_id}:/g" \
+      -e "s/- changemaker-lite$/- changemaker-lite-${instance_id}/g" \
+      -e "s/driver: bridge$/driver: bridge/g" \
+      -e "s/volumes:/volumes:/g" \
+      -e "s/listmonk-data:/listmonk-data-${instance_id}:/g" \
+      -e "s/n8n_data:/n8n_data_${instance_id}:/g" \
+      -e "s/nc_data:/nc_data_${instance_id}:/g" \
+      -e "s/db_data:/db_data_${instance_id}:/g" \
+      -e "s/gitea_data:/gitea_data_${instance_id}:/g" \
+      -e "s/mysql_data:/mysql_data_${instance_id}:/g" \
+      "$DOCKER_COMPOSE_FILE" > "$temp_file"
+  
+  # Replace the original file
+  mv "$temp_file" "$DOCKER_COMPOSE_FILE"
+  
+  echo "✅ Updated docker-compose.yml with instance-specific names:"
+  echo "   - Container names: *-${instance_id}"
+  echo "   - Network name: changemaker-lite-${instance_id}"
+  echo "   - Volume names: *-${instance_id}"
+  
+  return 0
+}
+
+# Function to update .env file with instance identifier
+update_env_instance_config() {
+  local instance_id=$1
+  
+  if [ -n "$instance_id" ] && [ "$instance_id" != "main" ]; then
+    update_env_var "INSTANCE_ID" "$instance_id"
+    update_env_var "COMPOSE_PROJECT_NAME" "changemaker-lite-${instance_id}"
+    echo "Updated .env with instance configuration"
+  fi
+}
+
 # Initialize a new .env file if it doesn't exist
 if [ ! -f "$ENV_FILE" ]; then
   echo "No .env file found. Creating a new one from scratch."
@@ -674,6 +780,12 @@ echo -e "\n\nWelcome to Changemaker Config!\n"
 echo "This script will help you configure your .env file for Changemaker."
 echo "Please provide the following information:"
 
+# Get instance identifier and update docker-compose.yml
+echo -e "\n---- Instance Configuration ----"
+instance_identifier=$(get_instance_identifier)
+update_docker_compose_names "$instance_identifier"
+update_env_instance_config "$instance_identifier"
+
 # Domain configuration
 read -p "Enter your domain name (without protocol, e.g., example.com): " domain_name
 
@@ -830,6 +942,7 @@ echo "Secure passwords generated and updated."
 
 echo -e "\n✅ Configuration completed successfully!"
 echo "Your .env file has been configured with:"
+echo "- Instance ID: $instance_identifier"
 echo "- Domain: $domain_name"
 echo "- Cookie Domain: .$domain_name"
 echo "- Allowed Origins: https://map.$domain_name,http://localhost:3000"
@@ -846,6 +959,10 @@ echo "======================================"
 echo "Next Steps:"
 echo "======================================"
 echo ""
+if [ -n "$instance_identifier" ] && [ "$instance_identifier" != "main" ]; then
+  echo "Instance: $instance_identifier"
+  echo ""
+fi
 echo "1. Start services locally:"
 echo "   docker compose up -d"
 echo ""