appveyor is a Windows-oriented testing service like CircleCI.
We explored testing on Appveyor a year or so ago, but they did not have the capability to use Linux containers in their docker setup.
According to [forum issue](https://help.appveyor.com/discussions/questions/33953-docker-linux-containers-in-windows-docker-workers] they are about to roll out the latest WIndows Server, which they expect to be able to use to provide this.
该提问来源于开源项目:drud/ddev