docker-container-to-acr.properties.json

{
  "iconName": "docker",
  "parameters": [
    { "name" : "azureServiceConnectionId", "type": "connectedService:azureRM", "required": "true", "displayName": "Azure subscription" },
    { "name" : "repositoryName", "type": "string", "required": "true", "displayName": "Repository name" }
  ]
}