FROM linuxkit/alpine:8c02670fd2e5c28d03fd39db0bddc1379b3af6b2 AS mirror RUN mkdir -p /out/etc/apk && cp -r /etc/apk/* /out/etc/apk/ RUN apk add --no-cache --initdb -p /out \ alpine-baselayout \ busybox \ musl \ openntpd \ && true RUN rm -rf /out/etc/apk /out/lib/apk /out/var/cache FROM scratch ENTRYPOINT [] CMD [] WORKDIR / COPY --from=mirror /out/ / COPY etc/ /etc/ CMD ["/usr/sbin/ntpd", "-d"]