FROM golang:1.25-alpine AS builder
WORKDIR /src
COPY . .
RUN go build -o /docker-entrypoint -ldflags "-s -w" ./cmd/docker-entrypoint

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/restic /bin/restic

FROM scratch
LABEL org.opencontainers.image.source="https://github.com/garethgeorge/backrest"
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

COPY --from=builder /docker-entrypoint /docker-entrypoint

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