chore: bind lambda RIE to 0.0.0.0 for durable functions (#8483)

Co-authored-by: Renato Valenzuela <37676028+valerena@users.noreply.github.com>

Author: bchampp

samcli/local/docker/durable_lambda_container.py

@@ -59,6 +59,9 @@ def _update_lambda_environment_with_emulator_endpoint(self, kwargs):
         extra_hosts["host.docker.internal"] = "host-gateway"
         kwargs["extra_hosts"] = extra_hosts
 
+        # Bind to 0.0.0.0 so emulator can reach Lambda via host.docker.internal
+        kwargs["container_host_interface"] = "0.0.0.0"
+
     def _get_lambda_container_endpoint(self):
         """
         Get the Lambda container endpoint URL for the emulator to invoke.

tests/integration/durable_integ_base.py

@@ -62,7 +62,6 @@ def tearDownClass(cls):
     def get_invoke_command_list(self, function_name, **kwargs):
         """Get command list for invoking a durable function with built template."""
         kwargs.setdefault("template_path", str(self.built_template_path))
-        kwargs.setdefault("container_host_interface", "0.0.0.0")
         return self.get_command_list(function_name, **kwargs)
 
     def get_execution_history_command_list(self, execution_arn, output_format="json"):

tests/integration/local/start_api/test_start_api_durable.py

@@ -11,7 +11,6 @@
 
 class TestStartApiDurable(DurableIntegBase, StartApiIntegBaseClass):
     template_path = "/testdata/durable/template.yaml"
-    container_host_interface = "0.0.0.0"
 
     @classmethod
     def setUpClass(cls):

tests/integration/local/start_lambda/test_start_lambda_durable.py

@@ -21,7 +21,6 @@
 
 
 class TestStartLambdaDurable(DurableIntegBase, StartLambdaIntegBaseClass):
-    container_host_interface = "0.0.0.0"
     collect_start_lambda_process_output = True
 
     @classmethod