I have modified the Dockerfiles to include the migrator process inside
the docker container image.
Everything works fine now.
Modification on the Dockerfiles can be found on my github fork
https://github.com/yvnicolas/dockerfiles/tree/migrator_in_Dockerfile
which I have submitted as a pull request.
Resulting image for 1.1.1 is currently being pushed on docker hub public
repo yvnicolas/aerogear-unifiedpush
I do not have a very good connection where I am so do not worry if you
do not see it yet.
Comments and suggestions welcomed.
Great Easter to you all,
Yves