[test][test_docker] Increase a bit more the container memory for the...

[test][test_docker] Increase a bit more the container memory for the memory-limit test (maybe a py3 requirement?)

beat/core/test/test_docker.py

@@ -269,7 +269,7 @@ class AsyncWithEnvironmentTest(unittest.TestCase):
         cmd = ['python', '-c', '; '.join([
             "print('Before')",
             "import sys; sys.stdout.flush()",
-            "d = '0' * (20 * 1024 * 1024)",
+            "d = '0' * (40 * 1024 * 1024)",
             "import time; time.sleep(5)",
             "print('After')",
           ])
@@ -282,7 +282,7 @@ class AsyncWithEnvironmentTest(unittest.TestCase):
         # If you start seeing EBUSY (device or resource busy errors) from
         # docker, then try increasing a bit this value such that it still
         # triggers the memory allocation error for the array defined above.
-        self.host.start(container, virtual_memory_in_megabytes=10)
+        self.host.start(container, virtual_memory_in_megabytes=20)
 
         time.sleep(2)