Add python into integration tests image

dbms/tests/integration/test_external_dictionaries/test.py

@@ -121,7 +121,7 @@ def setup_module(module):
         main_configs.append(os.path.join(dict_configs_path, fname))
     cluster = ClickHouseCluster(__file__, base_configs_dir=os.path.join(SCRIPT_DIR, 'configs'))
     node = cluster.add_instance('node', main_configs=main_configs, with_mysql=True)
-    cluster.add_instance('clickhouse1', image="python")
+    cluster.add_instance('clickhouse1')
 
 @pytest.fixture(scope="module")
 def started_cluster():

docker/test/integration/Dockerfile

 FROM ubuntu:18.04
 
-RUN apt-get update && apt-get -y install tzdata
+RUN apt-get update && apt-get -y install tzdata python
 
 ENV TZ=Europe/Moscow
 RUN ln -snf /usr/share/zoneinfo/$TZ /etc/localtime && echo $TZ > /etc/timezone