Debian base image - Move from 3.7-slim-stretch to 3.7-slim-buster

Fix issue between flask-admin and werkzeug 1.0.0

Bump to Airflow 1.10.7

Fix bug with kubernetes executor (#470)

Bump to Airflow 1.10.6

Bump to Airflow 1.10.4 and Python 3.7

Bump Airflow version to 1.10.3 (#355)

* Bump airflow 1 10 3 (wmorin#3)
* use the user home as airflow home
* remove unused var env
* set default config & remove duplicated line

Bump airflow version (wmorin#2) (#304)

* Bump Airflow Version to 1.10.2
* Fix CI

Bump to 1.10.1

Drop build packages (#262)

Now that most scientific packages ship with wheels, we shouldn't need to install blas or lapack.