Update Dockerfile

Dockerfile

@@ -18,7 +18,8 @@ RUN pip install --no-cache-dir --upgrade -r requirements.txt
 RUN apt-get update && apt-get install -y dnsutils
 
 # Force using Google's DNS
-RUN echo "nameserver 8.8.8.8" >> /etc/resolvconf/resolv.conf.d/head && resolvconf
+RUN sed -i '1inameserver 8.8.8.8\nnameserver 8.8.4.4' /etc/resolv.conf || echo "Failed to update DNS"
+
 
 # Copy the app files
 COPY --chown=user . /app