WHEELHOUSE: since we're defining the variable we might as well use it.
DOCKER_IMAGE_NAME: introduced to prevent duplications of the name, and to
add a little confirmation message when the script is done.
Because we only pushed the final image to Docker Hub, it was impossible to
pull the base image someone else created and "quickly" build a new deploy
image.
Now the deploy scripts push (some) of the intermediate images as well,
making it possible to pull them later. I've added `build-pull.sh` and
`full-pull.sh` to perform this pull and built up from the pulled images.
- Ubuntu 17.10 → 18.04.
- Python 3.6.3 → 3.6.6.
- Use `DEBIAN_FRONTEND=noninteractive` to prevent prompts during
installation.
- Install `tzdata` in the base image as it's required by subimages.
- Correctly set maintainer in Dockerfile.
1_base: builds a base image, based on Ubuntu 16.10
2_buildpy: builds two images:
2a: an image that can build Python 3.6
2b: an image that contains the built Python 3.6 in /opt/python
3_buildwheels: builds an image to build wheel files, puts them in ../4_run
4_run: the production runtime image, which can't build anything and just runs.
