[Container app] az containerapp sessionpool create: Fix default container name to be lower case letters (Azure#7635)

Author: smzeng

src/containerapp/HISTORY.rst

@@ -5,6 +5,7 @@ Release History
 upcoming
 ++++++
 * 'az containerapp create/update': Update default value of enableMetrics to True for java runtime setting
+* 'az containerapp sessionpool create': Fix default container name to be lower case letters
 
 0.3.51
 ++++++

src/containerapp/azext_containerapp/_params.py

@@ -380,7 +380,7 @@ def load_arguments(self, _):
     with self.argument_context('containerapp sessionpool', arg_group='Container') as c:
         c.argument('managed_env', validator=validate_managed_env_name_or_id, options_list=['--environment'], help="Name or resource ID of the container app's environment.")
         c.argument('image', options_list=['--image', '-i'], help="Container image, e.g. publisher/image-name:tag.")
-        c.argument('container_name', help="Name of the container.")
+        c.argument('container_name', help="Name of the container. On create if no container name is provided the container name will default to the name of the session pool coverted to lower case.")
         c.argument('cpu', type=float, validator=validate_cpu, help="Required CPU in cores from 0.25 - 2.0, e.g. 0.5")
         c.argument('memory', validator=validate_memory, help="Required memory from 0.5 - 4.0 ending with \"Gi\", e.g. 1.0Gi")
         c.argument('env_vars', nargs='*', help="A list of environment variable(s) for the container. Space-separated values in 'key=value' format. Empty string to clear existing values. Prefix value with 'secretref:' to reference a secret.")

src/containerapp/azext_containerapp/containerapp_sessionpool_decorator.py

@@ -218,7 +218,7 @@ def set_up_resource(self):
 
     def set_up_container(self):
         container_def = ContainerModel
-        container_def["name"] = self.get_argument_container_name() if self.get_argument_container_name() else self.get_argument_name()
+        container_def["name"] = self.get_argument_container_name() if self.get_argument_container_name() else self.get_argument_name().lower()
         container_def["image"] = self.get_argument_image() if self.get_argument_image() else HELLO_WORLD_IMAGE
         if self.get_argument_env_vars() is not None:
             container_def["env"] = parse_env_var_flags(self.get_argument_env_vars())