Implement robust Redis URL parsing and connection checking

Dockerfile

@@ -27,9 +27,9 @@ COPY nginx.conf /etc/nginx/sites-available/default
 # Make scripts executable
 RUN chmod +x /app/code/start.sh
 
-# Install supervisord for process management
+# Install supervisord and netcat for process management and connectivity checks
 RUN apt-get update && \
-    apt-get install -y supervisor && \
+    apt-get install -y supervisor netcat-openbsd && \
     rm -rf /var/lib/apt/lists/*
 
 COPY supervisord.conf /etc/supervisor/conf.d/supervisord.conf