In August last year I had the chance to be on a very interesting migration project with the German startup HESA Solutions who are building the MySchleppApp. The technical summary of this project has been published on GitHub along with dockerfile and necessary scripts.
The docs folder contains the documentation of the migration project.
The file 2017-08-19-hesa-solutions.md contains the report of the migration and the joint hackfest of HESA Solutions and Microsoft. It's written to understand all important steps of the migration and to know possible sources of errors.
If you want to reproduce the migration you can clone this project. One thing you have to fill with your own data is the subdirectory wp of the Docker folder with your own WordPress deployment you want to migrate to Azure Web App for Container.