diff --git a/python/binharness/bootstrap/docker.py b/python/binharness/bootstrap/docker.py
index 3b6ab06..c6f4bfe 100644
--- a/python/binharness/bootstrap/docker.py
+++ b/python/binharness/bootstrap/docker.py
@@ -17,15 +17,15 @@ class DockerAgent(AgentConnection):
     it allows managing the agent in a docker container.
     """
 
-    _client: docker.DockerClient
+    _docker_client: docker.DockerClient
     _container_id: str
 
     def __init__(self: DockerAgent, container_id: str, port: int) -> None:
         """Initialize a DockerAgent."""
-        self._client = docker.from_env()
+        self._docker_client = docker.from_env()
         self._container_id = container_id
 
-        container = self._client.containers.get(container_id)
+        container = self._docker_client.containers.get(container_id)
         ip_address = container.attrs["NetworkSettings"]["IPAddress"]
         super().__init__(ip_address, port)
 
@@ -34,12 +34,12 @@ def __del__(self: DockerAgent) -> None:
         if self.container.status == "running":
             self.container.stop()
             self.container.remove()
-        self._client.close()
+        self._docker_client.close()
 
     @property
     def container(self: DockerAgent) -> docker.models.containers.Container:
         """Return the docker container."""
-        return self._client.containers.get(self._container_id)
+        return self._docker_client.containers.get(self._container_id)
 
 
 def _create_in_memory_tarfile(files: dict[str, str]) -> BinaryIO:
diff --git a/python/tests/bootstrap/test_docker.py b/python/tests/bootstrap/test_docker.py
index efe5e2a..a2be5d4 100644
--- a/python/tests/bootstrap/test_docker.py
+++ b/python/tests/bootstrap/test_docker.py
@@ -9,14 +9,16 @@
 
 def test_bootstrap_env_from_image(agent_binary_linux_host_arch: str) -> None:
     agent = bootstrap_env_from_image(agent_binary_linux_host_arch, "ubuntu:22.04")
+    try:
+        assert isinstance(agent, DockerAgent)
+        assert agent.get_environment_ids() == [0]
 
-    assert isinstance(agent, DockerAgent)
-    assert agent.get_environment_ids() == [0]
+        env = agent.get_environment(0)
+        target = Target(env, Path("/usr/bin/echo"), args=["hello world"])
+        proc = NullExecutor().run_target(target)
 
-    env = agent.get_environment(0)
-    target = Target(env, Path("/usr/bin/echo"), args=["hello world"])
-    proc = NullExecutor().run_target(target)
-
-    proc.wait()
-    assert proc.returncode == 0
-    assert proc.stdout.read() == b"hello world\n"
+        proc.wait()
+        assert proc.returncode == 0
+        assert proc.stdout.read() == b"hello world\n"
+    finally:
+        agent.container.stop()