trying to fix wheel deps

Dockerfile.minimal

@@ -17,8 +17,24 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
 # Set working directory
 WORKDIR /app
 
-# Copy requirements file
-COPY requirements-minimal.txt requirements.txt
+# Create minimal requirements inline to ensure we use Pydantic v1
+# which doesn't require Rust compilation
+RUN cat > requirements.txt << 'EOF'
+# Minimal requirements - no compilation needed
+# Using Pydantic v1 which is pure Python (no Rust required)
+fastapi==0.95.2
+pydantic==1.10.9
+uvicorn==0.22.0
+httpx==0.24.1
+icalendar==5.0.7
+jinja2==3.1.2
+apscheduler==3.10.1
+pytz==2023.3
+python-multipart==0.0.6
+starlette==0.27.0
+typing-extensions==4.6.3
+python-dateutil==2.8.2
+EOF
 
 # Install Python dependencies - all pure Python or pre-built wheels
 RUN pip install --no-cache-dir -r requirements.txt