Use Docker SDK for HF Spaces with Gradio 5+ and MCP

- Switch to Docker SDK for full control over environment
- Restore Gradio 5+ with MCP server support
- Python 3.11 for compatibility

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

Dockerfile

@@ -0,0 +1,31 @@
+FROM python:3.11-slim
+
+WORKDIR /app
+
+# Install system dependencies
+RUN apt-get update && apt-get install -y \
+    build-essential \
+    && rm -rf /var/lib/apt/lists/*
+
+# Copy requirements first for caching
+COPY requirements.txt .
+RUN pip install --no-cache-dir -r requirements.txt
+
+# Copy application code
+COPY . .
+
+# Create non-root user for HF Spaces
+RUN useradd -m -u 1000 user
+USER user
+
+# Set environment variables
+ENV HOME=/home/user \
+    PATH=/home/user/.local/bin:$PATH \
+    GRADIO_SERVER_NAME=0.0.0.0 \
+    GRADIO_SERVER_PORT=7860
+
+# Expose port
+EXPOSE 7860
+
+# Run the application
+CMD ["python", "app.py"]

README.md

@@ -3,8 +3,7 @@ title: Explainor
 emoji: 🎭
 colorFrom: purple
 colorTo: pink
-sdk: gradio
-sdk_version: 5.0.0
+sdk: docker
 app_file: app.py
 pinned: false
 license: mit

app.py

@@ -315,13 +315,12 @@ input::placeholder, textarea::placeholder {
 """
 
 if __name__ == "__main__":
-    # MCP server only works locally, not on Modal
+    # MCP server enabled for Gradio 5+
     enable_mcp = os.getenv("ENABLE_MCP_SERVER", "true").lower() == "true"
 
     app.launch(
         server_name="0.0.0.0",
         server_port=7860,
         share=False,
-        css=CUSTOM_CSS,
         mcp_server=enable_mcp,
     )

requirements.txt

@@ -2,4 +2,3 @@ gradio[mcp]>=5.0.0
 elevenlabs>=1.0.0
 httpx>=0.25.0
 python-dotenv>=1.0.0
-huggingface_hub>=0.25.0