FROM alpine:3.9

RUN apk --update add unbound wget bash

ADD assets/unbound.conf /etc/unbound/unbound.conf

RUN wget ftp://FTP.INTERNIC.NET/domain/named.cache -O /etc/unbound/root.hints

ADD start.sh /start.sh
RUN chmod +x /start.sh

EXPOSE 53/udp
EXPOSE 53

CMD ["/start.sh"]