upgrade nginx version of CDN image to fix issue
@@ -19,7 +19,7 @@ RUN GRPC_HEALTH_PROBE_VERSION=v0.4.8 && \
chmod +x /bin/grpc_health_probe
# TODO support BASE_IMAGE
-FROM nginx:1.19-alpine
+FROM nginx:1.21-alpine
ENV PATH=/opt/dragonfly/bin:$PATH
RUN echo "hosts: files dns" > /etc/nsswitch.conf
