[ADD] docker file and shippable compatibility

Docker odoo image
Building here
[ocaimages/oca-odoo](https://registry.hub.docker.com/u/ocaimages/oca-odoo/builds_history/91750/)
This is similar to:
```
pip install requirements.
apt-get install lxml
...
```
If we change this dependencies this image will build with new changes.

We can't use CMD or ENTRYPOINT in a CI image.
CI app run a custom script to start a build based on .travis.yml