#!/bin/bash set -e # Configure root password (default: admin) ROOT_PASSWORD="${SSH_ROOT_PASSWORD:-admin}" echo "root:${ROOT_PASSWORD}" | chpasswd # Optional: override hostname inside container if [ -n "$SSH_HOSTNAME" ]; then echo "$SSH_HOSTNAME" > /etc/hostname hostname "$SSH_HOSTNAME" fi # Generate host keys if missing (first boot) ssh-keygen -A # Fake bash history so the box looks used if [ ! -f /root/.bash_history ]; then cat > /root/.bash_history <<'HIST' apt update && apt upgrade -y systemctl status nginx tail -f /var/log/syslog df -h htop ps aux | grep python git pull origin main cd /root/projects vim notes.txt crontab -e ls /var/www/html HIST fi # Logging pipeline: named pipe → rsyslogd (RFC 5424) → stdout → Docker log capture mkfifo /var/run/decnet-logs # Relay pipe to stdout so Docker captures all syslog events cat /var/run/decnet-logs & # Start rsyslog (reads /etc/rsyslog.d/99-decnet.conf, writes to the pipe above) rsyslogd # sshd logs via syslog — no -e flag, so auth events flow through rsyslog → pipe → stdout exec /usr/sbin/sshd -D