Airflow: Docker "read-only" repo with changes from Airflow pushed to it.

[potiuk]

Following a discussion in https://github.com/apache/airflow/issues/8872 I believe it's a good idea to have a separate 'read-only" repository, where only a Dockerfile and corresponding scripts and documentation would be pushed from Airflow automatically.

We still want to keep the Dockerfile in Airlfow's mono-repo, but having a separate Dockerfile that can be conveniently used by the developers woudl be a big plus for anyone who would like to - potentially contribute back to Airflow and use only the "Docker" part of it - Either via subrepo or submodule.

[potiuk]

cc: @landier

[mik-laj]

+1 This will allow us to create a separate README.md file for this image. Currently, In DockerHub README.md from our apache/airflow repository is available, which is not very useful for a Docker image user.

Dockerhub apache/airflow: https://hub.docker.com/r/apache/airflow

I would prefer we had a separate README.md file for the image. The Keycloaak approach is similar
Dockerhub: https://hub.docker.com/r/jboss/keycloak/
README.md for Docker image on Github: https://github.com/keycloak/keycloak-containers/blob/master/README.md
README.md for Keycloak project on Github: https://github.com/keycloak/keycloak/blob/master/README.md

[potiuk]

Hey @landier - Please take a look at https://github.com/potiuk/airflow-docker where I implemented it.

You just need to:

1) clone the repo
2) check out the "master" branch
3) run docker build pointing out to the version of Airflow you want to install (see the README)

I think that should do the job nicely :). Please let me know what you think.

I restarted relevant discussion in our monorepo vs. multiple repo thread - where I described how it works: https://lists.apache.org/thread.html/ra4eba1d28ece8b8276067dc2a947f8192a89a43cdb15c1699b8dba7d%40%3Cdev.airflow.apache.org%3E

[landier]

Thanks, I'll look at it!

[landier]

OK so I did some test and it looks perfect: easy to customize the build, low footprint...
I really appreciate this and I'm sure others would/will.

Thanks again.

[potiuk]

I will move it to "airflow-docker" repo shortly :)