Don't use container name as host for cqiclient

app/corpora/cqi_over_sio/__init__.py

 from cqi import CQiClient
 from cqi.errors import CQiException
 from cqi.status import CQiStatus
-from flask import session
+from docker.models.containers import Container
+from flask import current_app, session
 from flask_login import current_user
 from flask_socketio import Namespace
 from inspect import signature
 from threading import Lock
 from typing import Callable, Dict, List, Optional
-from app import db, hashids, socketio
+from app import db, docker_client, hashids, socketio
 from app.decorators import socketio_login_required
 from app.models import Corpus, CorpusStatus
 from . import extensions
@@ -121,7 +122,10 @@ class CQiNamespace(Namespace):
             socketio.sleep(3)
             retry_counter -= 1
             db.session.refresh(db_corpus)
-        cqi_client: CQiClient = CQiClient(f'cqpserver_{db_corpus_id}')
+        cqpserver_container_name: str = f'cqpserver_{db_corpus_id}'
+        cqpserver_container: Container = docker_client.containers.get(cqpserver_container_name)
+        cqpserver_host: str = cqpserver_container.attrs['NetworkSettings']['Networks'][current_app.config['NOPAQUE_DOCKER_NETWORK_NAME']]['IPAddress']
+        cqi_client: CQiClient = CQiClient(cqpserver_host)
         session['cqi_over_sio'] = {
             'cqi_client': cqi_client,
             'cqi_client_lock': Lock(),