feat: add docker

docker/entrypoint.sh

@@ -0,0 +1,33 @@
+#!/bin/sh
+
+set -e # Exit immediately if a command exits with a non-zero status.
+
+# Define the command to be executed by cron or manually
+APP_CMD="/usr/local/bin/ruleset-sync -i /config/template.json -o /rules"
+
+# === Manual Run ===
+# If the first argument is "manual", run the sync once and exit.
+if [ "$1" = "manual" ]; then
+    echo "[$(date +"%Y-%m-%d %H:%M:%S")] Running one-time manual sync..."
+    # Execute the command as the non-root 'app' user
+    su-exec app:app ${APP_CMD}
+    exit 0
+fi
+
+# === Cron Setup ===
+# This section runs as root to set up the cron job.
+
+echo "Setting up cron job with schedule: ${CRON_SCHEDULE}"
+
+# Remove any existing crontab
+crontab -d || true
+
+# Add the new cron job. It will run the command as the 'app' user
+# and redirect stdout/stderr to the container's log stream.
+echo "${CRON_SCHEDULE} su-exec app:app ${APP_CMD} > /proc/1/fd/1 2>/proc/1/fd/2" | crontab -
+
+# Start the cron daemon in the foreground.
+# This keeps the container running and handles executing the scheduled jobs.
+# Logs from crond itself and the script's output will go to Docker logs.
+echo "Starting cron daemon..."
+exec crond -f -l 8