fix(deploy): SSH 호스트 IP 수정 (localhost → Docker bridge gateway)

Docker 컨테이너에서 localhost는 컨테이너 자신을 가리킴.
호스트로 접속하려면 Docker bridge gateway(172.17.0.1) 사용 필요.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

.gitea/workflows/deploy.yml

@@ -89,9 +89,11 @@ jobs:
           mkdir -p ~/.ssh
           echo "$DEPLOY_KEY" > ~/.ssh/id_deploy
           chmod 600 ~/.ssh/id_deploy
-          ssh-keyscan localhost >> ~/.ssh/known_hosts 2>/dev/null || true
+          # Docker 컨테이너 → 호스트: bridge gateway(172.17.0.1) 경유
+          DOCKER_HOST_IP=172.17.0.1
+          ssh-keyscan $DOCKER_HOST_IP >> ~/.ssh/known_hosts 2>/dev/null || true
 
-          SSH_CMD="ssh -i ~/.ssh/id_deploy -o StrictHostKeyChecking=no root@localhost"
+          SSH_CMD="ssh -i ~/.ssh/id_deploy -o StrictHostKeyChecking=no root@$DOCKER_HOST_IP"
 
           $SSH_CMD bash -s << 'RESTART'
           set -e