Dockerfile

#docker buildx build --platform linux/amd64,linux/arm64,linux/arm/v7 -f Dockerfile -t bnhf/nut-plus:latest -t bnhf/nut-plus:2025.08.29 . --push --no-cache
FROM alpine:3.22

ENV NUT_QUIET_INIT_UPSNOTIFY=true \
    TLS_FILE=/etc/ssl/cert.pem \
    MSMTP_LOG=-

# Install required packages
RUN apk add --no-cache \
  bash \
  nut nut-dev \
  linux-pam \
  libusb libusb-dev \
  net-snmp-libs net-snmp-dev \
  neon neon-dev \
  gawk sed \
  tzdata dbus \
  syslog-ng busybox-openrc \
  msmtp ca-certificates \
  && rc-update add syslog boot \
  && mkdir -p /opt/nut /var/run/nut/upssched \
  && chmod 700 /var/run/nut

# Copy NUT config files to /opt/nut to be copied by start.sh
COPY ./config/ /opt/nut/
COPY start.sh .
RUN chmod +x start.sh

# Expose default NUT port
EXPOSE 3493

# Set the container entrypoint
CMD ["./start.sh"]