FROM debian:stable-slim

# Install Postfix and tools
RUN apt-get update && \
    DEBIAN_FRONTEND=noninteractive apt-get install -y \
        postfix \
        libsasl2-modules \
        mailutils \
        gettext-base \
        && apt-get clean && rm -rf /var/lib/apt/lists/*

# Copy configs
COPY main.cf.template /etc/postfix/main.cf.template
COPY sasl_passwd.template /etc/postfix/sasl_passwd.template
COPY virtual_aliases.cf /etc/postfix/virtual_aliases.cf
COPY sender_access /etc/postfix/sender_access
COPY entrypoint.sh /entrypoint.sh
RUN chmod +x /entrypoint.sh

# Generate Postfix maps for virtual aliases and sender access
RUN postmap /etc/postfix/virtual_aliases.cf
RUN postmap /etc/postfix/sender_access

# Expose SMTP
EXPOSE 25

ENTRYPOINT ["/entrypoint.sh"]