(CI): update docker images
What does this MR do?
- Use python:alpine (98Mb) instead of python:3 (918Mb)
- Enable SSL CA verification when cloning. The docker images contains our certificates since a while...
How to test it?
- Just look if the pipeline built successfully.
Associated Issues/Merge Requests
- Issues
- Closes #28 (closed)
Edited by Julien WAECHTER