fix: entry point and default command

Author: akshay5995

Dockerfile

@@ -58,5 +58,6 @@ EXPOSE 8080
 HEALTHCHECK --interval=30s --timeout=30s --start-period=5s --retries=3 \
     CMD curl -f http://localhost:8080/health || exit 1
 
-# Default command
-CMD ["python", "-m", "src.gateway", "--host", "0.0.0.0", "--port", "8080"]
+# Set entrypoint and default command
+ENTRYPOINT ["python", "-m", "src.gateway"]
+CMD ["--host", "0.0.0.0", "--port", "8080"]