build docker image using Alpine Linux
- Use the base image Alpine Linux instead of Centos 7
- This will allow to reduce the size of the final image
- Add option to build the application either by uisng the git repository or by using tar file.
- If the image size is rather small, it is then possible to create a docker container by type of application limbra, lhcbfrance, ... with an http front-end like nginx....