FROM alpine:latest

RUN apk add --update --no-cache \
    dhcp

RUN mkdir -p /var/lib/dhcp && \
    touch /var/lib/dhcp/dhcpd.leases

EXPOSE 67/udp 67/tcp

COPY ./ddns.key /etc/dhcp/ddns.key
COPY ./dhcpd.conf /etc/dhcp/dhcpd.conf

CMD /usr/sbin/dhcpd -4 -f -d --no-pid -cf /etc/dhcp/dhcpd.conf