Uninstall old/conflicting supabase dependencies before install to fix proxy error

Dockerfile

@@ -16,6 +16,8 @@ RUN apt-get update && apt-get install -y \
 
 # Install Python dependencies
 COPY requirements.txt .
+# Uninstall any old/conflicting supabase dependencies
+RUN pip uninstall -y supabase postgrest-py gotrue || true
 # Force rebuild for clean supabase install
 RUN pip install --upgrade pip
 RUN pip install -r requirements.txt