Simplify application stack configuration for Web Apps

[hknutsen]

Module Name

web-app

Description

Remove variable application_stack.

Add variables:

• application_stack_docker_image_name
• application_stack_docker_registry_url
• application_stack_docker_registry_username
• application_stack_docker_registry_password
• current_application_stack

Similar to equinor/terraform-azurerm-function-app#56, however Web App seems to support multiple stacks, thus there will be no need to create multiple dynamic application_stack blocks.

Example Terraform Configuration

module "web_app" {
  source = "equinor/web-app/azurerm"

  app_name                   = "app-${random_id.this.hex}"
  resource_group_name        = var.resource_group_name
  location                   = var.location
  app_service_plan_id        = module.app_service.plan_id
  log_analytics_workspace_id = module.log_analytics.workspace_id

  application_stack_docker_image_name   = "appsvc/staticsite:latest"
  application_stack_docker_registry_url = "https://mcr.microsoft.com"
}