potiuk opened a new pull request #21217: URL: https://github.com/apache/airflow/pull/21217
Airflow produces images for multiple versions. Sometimes we release several images for different versions close to one another when base Python image is the same. In those cases it would be great if images for different Airflow versions shared as much as possible of image layers - the "base" dependencies usually do not change between versions so two images with the same Python version could only start differring at the moment we start to install Airflow for the first time. This change moves AIRFLOW_VERSION ARG declaration and ENV variable as possible, so that earlier layers in the Docker images are the same for different Airflow image versions as long as the base Python image is the same. This should decrease significantly used space if someone switches between two Airflow versions in the same system (for testing or when doing migration). It also should speed up cache refreshing and rebuilding and decrease overall size of the cache used by multiple Airflow Images (especially when we are close to release (like we are now with Airlfow 2.2.4) <!-- Thank you for contributing! Please make sure that your code changes are covered with tests. And in case of new features or big changes remember to adjust the documentation. Feel free to ping committers for the review! In case of existing issue, reference it using one of the following: closes: #ISSUE related: #ISSUE How to write a good git commit message: http://chris.beams.io/posts/git-commit/ --> --- **^ Add meaningful description above** Read the **[Pull Request Guidelines](https://github.com/apache/airflow/blob/main/CONTRIBUTING.rst#pull-request-guidelines)** for more information. In case of fundamental code change, Airflow Improvement Proposal ([AIP](https://cwiki.apache.org/confluence/display/AIRFLOW/Airflow+Improvements+Proposals)) is needed. In case of a new dependency, check compliance with the [ASF 3rd Party License Policy](https://www.apache.org/legal/resolved.html#category-x). In case of backwards incompatible changes please leave a note in [UPDATING.md](https://github.com/apache/airflow/blob/main/UPDATING.md). -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
