FROM quay.io/centos/centos:stream10 AS builder

# Tools needed to fetch and unpack the smtprelay release
RUN dnf install -y curl jq tar gzip \
 && dnf clean all

COPY install-smtprelay.sh /
RUN /install-smtprelay.sh

FROM quay.io/centos/centos:stream10

# CA certificates are required to establish TLS connections to the relay host
RUN dnf install -y ca-certificates \
 && dnf clean all

COPY --from=builder /usr/local/bin/smtprelay /usr/local/bin/smtprelay

# Submission port
EXPOSE 587

ENTRYPOINT [ "/usr/local/bin/smtprelay" ]
CMD [ "--config", "/etc/smtprelay/smtprelay.ini", "-logfile=/dev/stdout" ]