message: Fix Container App py example
diff: @@ -4,7 +4,7 @@ import pulumi
  from pulumi_azure_native import containerregistry
  from pulumi_azure_native import operationalinsights
  from pulumi_azure_native import resources
  -from pulumi_azure_native import web
  +import pulumi_azure_native.web.v20210301 as web
  import pulumi_docker as docker
  resource_group = resources.ResourceGroup("rg")
  @@ -35,18 +35,17 @@ registry = containerregistry.Registry("registry",
  sku=containerregistry.SkuArgs(name="Basic"),
  admin_user_enabled=True)
  -credentials = pulumi.Output.all(resource_group.name, registry.name) \
  - .apply(lambda args: containerregistry.list_registry_credentials(
  - resource_group_name=args[0],
  - registry_name=args[1]
  - ))
  -admin_username = credentials.Apply(lambda c: c.username)
  -admin_password = credentials.Apply(lambda c: c.passwords[0])
  +credentials = pulumi.Output.all(resource_group.name, registry.name).apply(
  + lambda args: containerregistry.list_registry_credentials(resource_group_name=args[0],
  + registry_name=args[1]))
  +admin_username = credentials.username
  +admin_password = credentials.passwords[0]["value"]
  custom_image = "node-app"
  my_image = docker.Image(custom_image,
  - image_name=Output.concat(registry.login_server, "/", custom_image, ":v1.0.0"),
  - build=docker.DockerBuild(context = Output.concat("./", custom_image)),
  + image_name=registry.login_server.apply(
  + lambda login_server: f"{login_server}/{custom_image}:v1.0.0"),
  + build=docker.DockerBuild(context=f"./{custom_image}"),
  registry=docker.ImageRegistry(
  server=registry.login_server,
  username=admin_username,
  