feat: Reduce resources for test containers

tests/integration/test_sandbox.py

@@ -134,6 +134,8 @@ def test_exec_working_dir_respected():
         image="python:3.11-slim",
         command="sleep infinity",
         working_dir="/tmp",
+        cpu_limit=1,
+        memory_limit="256m",
     )
     sb.start()
     try:
@@ -249,6 +251,8 @@ def test_context_manager_stops_container():
         container_name="test-ctx-manager",
         image="python:3.11-slim",
         command="sleep infinity",
+        cpu_limit=1,
+        memory_limit="256m",
     )
     sb.start()
     with sb: