Update Dockerfile

Dockerfile

@@ -10,8 +10,6 @@ COPY requirements.txt .
 
 RUN pip install --no-cache-dir -r requirements.txt
 
-# EXPOSE port (use a default value if $PORT is not set at build time)
 EXPOSE 7860
 
-# Use shell form to ensure $PORT is substituted at runtime, with a default of 7860
 CMD uvicorn app:app --host 0.0.0.0 --port ${PORT:-7860}