#!/bin/bash
set -euo pipefail

: "${TARGET_HOSTS:?TARGET_HOSTS is not configured}"
: "${SSH_USER:?SSH_USER is not configured}"
echo "SSH directory:"
ls -la ~/.ssh/ 2>/dev/null || true

echo "SSH-related environment variables:"
env | grep -Ei 'ssh|key' | sed 's/=.*/=<set>/'
for host in $TARGET_HOSTS; do
    echo "Connecting to $host..."

    ssh \
        -i ~/.ssh/alpine_hosts \
        -o BatchMode=yes \
        -o StrictHostKeyChecking=accept-new \
        "$SSH_USER@$host" \
        'hostname'
done