fix: container resolv cannot be modified

Dockerfile

@@ -80,7 +80,6 @@ RUN cp -f /app/nginx.conf /etc/nginx/nginx.template.conf \
     && echo "/app/" > /usr/local/lib/python${python_ver%.*}/site-packages/app.pth \
     && echo 'fs.inotify.max_user_watches=5242880' >> /etc/sysctl.conf \
     && echo 'fs.inotify.max_user_instances=5242880' >> /etc/sysctl.conf \
-    && echo "nameserver 127.0.0.1" > /etc/resolv.conf \
     && locale-gen zh_CN.UTF-8 \
     && FRONTEND_VERSION=$(curl -sL "https://api.github.com/repos/jxxghp/MoviePilot-Frontend/releases/latest" | jq -r .tag_name) \
     && curl -sL "https://github.com/jxxghp/MoviePilot-Frontend/releases/download/${FRONTEND_VERSION}/dist.zip" | busybox unzip -d / - \