Update Dockerfile

Dockerfile

@@ -1,26 +1,34 @@
-FROM python:3.10-slim
-
-# System dependencies (FFmpeg is required for audio processing via yt_dlp)
-RUN apt-get update \
-    && apt-get install -y --no-install-recommends ffmpeg curl \
-    && rm -rf /var/lib/apt/lists/*
-
-WORKDIR /app
-
-# Copy and install dependencies
-COPY requirements.txt ./
-RUN pip install --no-cache-dir -r requirements.txt
-
-# Copy the application code
-COPY app.py ./
-
-# Environment variables for Gradio
-ENV GRADIO_SERVER_NAME=0.0.0.0 \
-    GRADIO_SERVER_PORT=7860 \
-    PYTHONUNBUFFERED=1
-
-# Expose the default Gradio port
-EXPOSE 7860
-
-# Start the app
-CMD ["python", "app.py"]
+FROM python:3.10-slim
+
+# System dependencies (FFmpeg is required for yt_dlp postprocessing)
+RUN apt-get update \
+ && apt-get install -y --no-install-recommends ffmpeg curl ca-certificates \
+ && rm -rf /var/lib/apt/lists/*
+
+WORKDIR /app
+
+# Install Python deps first (better layer caching)
+COPY requirements.txt ./
+# Keep image lean and avoid version-check noise
+ENV PIP_NO_CACHE_DIR=1 \
+    PIP_DISABLE_PIP_VERSION_CHECK=1 \
+    PYTHONDONTWRITEBYTECODE=1 \
+    PYTHONUNBUFFERED=1
+
+# Upgrade pip to avoid resolver quirks on slim images
+RUN python -m pip install --upgrade pip \
+ && pip install -r requirements.txt
+
+# Copy application code
+COPY app.py ./
+
+# Default envs for Gradio; actual port may be injected by the platform as $PORT
+ENV GRADIO_SERVER_NAME=0.0.0.0 \
+    GRADIO_SERVER_PORT=7860 \
+    PORT=7860
+
+# Expose default (platform may override via $PORT)
+EXPOSE 7860
+
+# Run the app
+CMD ["python", "app.py"]