#!/usr/bin/env bash
set -u

HOST="${1:-change-pass.iep.loc}"

echo "=== DNS ==="
getent hosts "$HOST" || { echo "DNS fail"; exit 1; }
IP=$(getent hosts "$HOST" | awk '{print $1; exit}')
echo "IP=$IP"

echo
echo "=== Route ==="
ip route get "$IP"

echo
echo "=== TCP 80/443 ==="
nc -vz "$IP" 80  2>&1 || true
nc -vz "$IP" 443 2>&1 || true

echo
echo "=== Docker routes (172.16/12) ==="
ip route | grep -E '172\.(1[6-9]|2[0-9]|3[0-1])\.' || echo "(none)"

echo
echo "=== Docker networks ==="
docker network inspect $(docker network ls -q) 2>/dev/null \
  | grep -E '"Name"|Subnet|Gateway' || echo "docker not available"