Add Docker build workflow

dockerfile

@@ -24,7 +24,7 @@ RUN useradd -m bot
 USER bot
 
 # Create directories for persistent storage and modify permissions
-RUN chown -R bot:bot /app
+RUN chown -R bot:bot /app && chmod -R 777 /app
 RUN mkdir -p /app/logs && chmod -R 777 /app/logs
 RUN mkdir -p /app/embed && chmod -R 777 /app/embed