Add example env and healthcheck

Dockerfile

@@ -5,12 +5,15 @@ WORKDIR /app
 
 COPY update.py /app/update.py
 COPY entrypoint.sh /app/entrypoint.sh
+COPY healthcheck.sh /app/healthcheck.sh
 
 RUN pip install --no-cache-dir requests==2.32.3 \
-  && chmod +x /app/entrypoint.sh
+  && chmod +x /app/entrypoint.sh /app/healthcheck.sh
 
 ENV OUT_DIR=/data
 VOLUME ["/data"]
 
 ENTRYPOINT ["/app/entrypoint.sh"]
 
+HEALTHCHECK --interval=5m --timeout=10s --start-period=30s --retries=3 \
+  CMD /app/healthcheck.sh

example.env

@@ -0,0 +1,19 @@
+# Required
+MAXMIND_LICENSE_KEY=
+
+# Optional (helps with rate limits)
+PDB_API_KEY=
+
+# Output data location shared with the detection service
+OUT_DIR=/data
+
+# PeeringDB settings
+PDB_BASE=https://www.peeringdb.com
+PDB_INFO_TYPE=Educational/Research
+PDB_LIMIT=250
+
+# HTTP settings
+HTTP_TIMEOUT=30
+
+# Update interval (seconds, default 30 days)
+INTERVAL_SECONDS=2592000

healthcheck.sh

@@ -0,0 +1,49 @@
+#!/bin/sh
+set -eu
+
+OUT_DIR="${OUT_DIR:-/data}"
+PDB_BASE="${PDB_BASE:-https://www.peeringdb.com}"
+INFO_TYPE="${PDB_INFO_TYPE:-Educational/Research}"
+
+if [ -z "${MAXMIND_LICENSE_KEY:-}" ]; then
+  echo "[health] MAXMIND_LICENSE_KEY missing" >&2
+  exit 1
+fi
+
+if [ ! -d "${OUT_DIR}" ]; then
+  echo "[health] OUT_DIR missing: ${OUT_DIR}" >&2
+  exit 1
+fi
+
+if [ ! -s "${OUT_DIR}/GeoLite2-ASN.mmdb" ]; then
+  echo "[health] GeoLite2-ASN.mmdb missing in ${OUT_DIR}" >&2
+  exit 1
+fi
+
+if [ ! -s "${OUT_DIR}/nren_asns.txt" ]; then
+  echo "[health] nren_asns.txt missing in ${OUT_DIR}" >&2
+  exit 1
+fi
+
+mm_url="https://download.maxmind.com/app/geoip_download?edition_id=GeoLite2-ASN&license_key=${MAXMIND_LICENSE_KEY}&suffix=tar.gz"
+mm_code="$(curl -fsS -o /dev/null -w "%{http_code}" "${mm_url}" || true)"
+if [ "${mm_code}" != "200" ]; then
+  echo "[health] MaxMind download not accessible (status ${mm_code})" >&2
+  exit 1
+fi
+
+pdb_code="000"
+pdb_url="${PDB_BASE}/api/net"
+pdb_args="--get --data-urlencode info_type=${INFO_TYPE} --data-urlencode limit=1 --data-urlencode skip=0 --data-urlencode fields=asn,status,info_type"
+if [ -n "${PDB_API_KEY:-}" ]; then
+  pdb_code="$(curl -fsS -o /dev/null -w "%{http_code}" -H "Accept: application/json" -H "Authorization: Api-Key ${PDB_API_KEY}" ${pdb_args} "${pdb_url}" || true)"
+else
+  pdb_code="$(curl -fsS -o /dev/null -w "%{http_code}" -H "Accept: application/json" ${pdb_args} "${pdb_url}" || true)"
+fi
+
+if [ "${pdb_code}" != "200" ] && [ "${pdb_code}" != "429" ]; then
+  echo "[health] PeeringDB not accessible (status ${pdb_code})" >&2
+  exit 1
+fi
+
+exit 0