Update Dockerfile

Dockerfile

@@ -31,8 +31,7 @@ EXPOSE ${PORT:-7860}
 # Define environment variable to ensure Python output is sent straight to logs
 ENV PYTHONUNBUFFERED=1
 
-# Command to run the application using Gunicorn
+# Command to run the application using Gunicorn (SHELL FORM for variable expansion)
 # It will run the Starlette 'app' object found in the 'main' module (main.py)
 # Listen on all interfaces (0.0.0.0) on the port specified by HF/env var (usually 7860)
-# Using environment variable expansion for port binding
-CMD ["gunicorn", "-k", "uvicorn.workers.UvicornWorker", "--bind", "0.0.0.0:${PORT:-7860}", "main:app"]
+CMD gunicorn -k uvicorn.workers.UvicornWorker --bind 0.0.0.0:${PORT:-7860} main:app