Feature Request: Support for Linux Container based Function Apps

[wbreza]

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Description

Azure Function apps now support being deployed as a docker image within a Linux app service plan. The only primary difference in the underlying ARM properties are the following:

kind: functionapp,linux,container
siteProperties/LinuxFxVersion: DOCKER|{path_to_registry}/{image_name}:{tag}

I don't have a PR yet but would like to volunteer to add support for this.

Based on reading the threads for the referenced items its unclear how it would be best to handle the overloaded kind attribute to automatically be built based on other settings.

The default value for kind in function apps is functionapp. If it's a linux app then it becomes functionapp,linux and finally if its a linux container the value is functionapp,linux,container

One option would be to dynamically build up the kind attribute based on inspecting the app_service_plan_id and other related properties.

Another approach vs. continuing with the linux_fx_version approach would be to split this configuration out into a common object with the properties required to configure a container

container_config = {
    registry_url = "{path_to_registry}"
    image_name = "{image_name}"
    tag_name = "{tag_name}"
}

New or Affected Resource(s)

• azurerm_function_app

Potential Terraform Configuration

resource "azurerm_function_app" "function_app" {
    name                      = "{name_of_resource}"
    location                  = "{region_for_resource}"
    resource_group_name       = "{resource_group_name}"
    app_service_plan_id       = "{app_service_plan_id}"
    storage_connection_string = "{storage_connection_string}"

    site_config = {
        linux_fx_version = "DOCKER|{path_to_registry}/{image_name}:{tag}"
    }

    #OR

    container_config = {
        registry_url = "{path_to_registry}"
        image_name = "{image_name}"
        tag_name = "{tag_name}"
    }
}

References

• Feature Request: azurerm_app_service resource to support the kind argument #1045, Feature Request: Web App for Containers support #580

[joakimhew]

I might be wrong. But it seems like there is already support for this? 1578 @tombuildsstuff @wbreza

EDIT: Apologies, I just realised that this is about the azurerm_function_app resource type

[ghost]

I'm going to lock this issue because it has been closed for 30 days ⏳. This helps our maintainers find and focus on the active issues.

If you feel this issue should be reopened, we encourage creating a new issue linking back to this one for added context. If you feel I made an error 🤖 🙉 , please reach out to my human friends 👉 [email protected]. Thanks!