FROM golang:1.21-alpine AS builder
WORKDIR /app
COPY ./ ./
RUN set -eux; \
    apk add --no-cache bash make git protoc protobuf-dev dumb-init mailcap ca-certificates tzdata; \
    update-ca-certificates; \
    make install_protobuf build

FROM scratch
WORKDIR /
COPY --from=builder /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/ca-certificates.crt
COPY --from=builder /etc/mime.types /etc/mime.types
COPY --from=builder /usr/share/zoneinfo /usr/share/zoneinfo
COPY --from=builder /usr/bin/dumb-init /bin/dumb-init
COPY --from=builder /app/build/sshpoke /sshpoke
EXPOSE 25680
EXPOSE 25681
ENTRYPOINT ["/bin/dumb-init", "--"]
CMD ["/sshpoke"]