Fix entrypoint usage in broken container tests to unblock CI (#1005)

* Add news fragment

* Use list[str] for entrypoint in container config tests

Author: mdegat01

CHANGES/1004.bugfix

@@ -0,0 +1 @@
+Fix entrypoint usage in broken container tests to unblock CI.

tests/test_containers.py

@@ -30,7 +30,7 @@ async def test_run_existing_container(docker: Docker, image_name: str) -> None:
     container = await docker.containers.run(
         config={
             "Cmd": ["-c", "print('hello')"],
-            "Entrypoint": "python",
+            "Entrypoint": ["python"],
             "Image": image_name,
         }
     )
@@ -56,7 +56,7 @@ async def test_run_container_with_missing_image(
     container = await docker.containers.run(
         config={
             "Cmd": ["-c", "print('hello')"],
-            "Entrypoint": "python",
+            "Entrypoint": ["python"],
             "Image": image_name,
         }
     )
@@ -125,7 +125,7 @@ async def test_container_stats_list(docker: Docker, image_name: str) -> None:
     container = await docker.containers.run(
         config={
             "Cmd": ["-c", "print('hello')"],
-            "Entrypoint": "python",
+            "Entrypoint": ["python"],
             "Image": image_name,
         }
     )
@@ -145,7 +145,7 @@ async def test_container_stats_stream(docker: Docker, image_name: str) -> None:
     container = await docker.containers.run(
         config={
             "Cmd": ["-c", "print('hello')"],
-            "Entrypoint": "python",
+            "Entrypoint": ["python"],
             "Image": image_name,
         }
     )