Update Dockerfile

Dockerfile

@@ -5,22 +5,24 @@ ENV PIP_DISABLE_PIP_VERSION_CHECK=1 \
     PYTHONDONTWRITEBYTECODE=1 \
     PYTHONUNBUFFERED=1
 
-# System deps (minimal)
+# System deps
 RUN apt-get update && apt-get install -y --no-install-recommends \
     build-essential git curl && \
     rm -rf /var/lib/apt/lists/*
 
 WORKDIR /app
-COPY requirements.txt /app/
 
-RUN pip install --upgrade pip && \
-    pip install -r requirements.txt
+# Install deps first for better caching
+COPY requirements.txt /app/
+RUN pip install --upgrade pip && pip install -r requirements.txt
 
 # Copy source
 COPY . /app
 
-# Streamlit in Spaces binds to 0.0.0.0:7860
+# Hugging Face Spaces typically expose $PORT; default to 7860 for local runs
+ENV PORT=7860
 EXPOSE 7860
 
-# Streamlit avoids opening browser by default in container
-CMD ["streamlit", "run", "frontend.py", "--server.port=7860", "--server.address=0.0.0.0"]
+# Start Streamlit on the correct interface/port
+# (shell form so $PORT expands)
+CMD bash -lc "streamlit run frontend.py --server.address=0.0.0.0 --server.port=$PORT"