add tests and docker infra

tests/web_api/e2e/test_healthcheck.py

@@ -0,0 +1,14 @@
+from dishka import FromDishka
+from httpx import AsyncClient
+
+from tests.web_api.ioc import inject
+
+
+@inject
+async def test_healthcheck(
+    http_client: FromDishka[AsyncClient],
+) -> None:
+    response = await http_client.get("/healthcheck")
+    response_json = response.json()
+
+    assert response_json["ok"]