FROM alpine:latest AS alpine
RUN apk add --no-cache ca-certificates tini-static
RUN mkdir /tmp-orig
COPY backrest /backrest
RUN /backrest --install-deps-only
RUN mkdir -p /bin && mv /root/.local/share/backrest/* /bin

FROM scratch 
COPY --from=alpine /tmp-orig /tmp
COPY --from=alpine /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/
COPY --from=alpine /bin /bin
COPY --from=alpine /sbin/tini-static /tini
COPY backrest /backrest

ENTRYPOINT ["/tini", "--"]
CMD ["/backrest"]