Update Dockerfile

Dockerfile

@@ -10,9 +10,8 @@ WORKDIR /app
 
 # Install system dependencies (useful for spatial libraries)
 RUN apt-get update && apt-get install -y --no-install-recommends \
-    curl \
-    && rm -rf /var/lib/apt/lists/* \
-    && apt-get install -y libexpat1-dev
+    curl libexpat1\
+    && rm -rf /var/lib/apt/lists/*
 
 # Install Titiler and Uvicorn server
 RUN pip install --no-cache-dir titiler.application uvicorn