potiuk opened a new pull request #6494: [AIRFLOW-5830] Get rid of slim image (depends on [AIRFLOW-5826] [AIRFLOW-5827]) URL: https://github.com/apache/airflow/pull/6494 NOTE TO REVIEWER: This change depends on #6490 and #6493 so please review only last commit. The slim image gave only very small gain on executing the tests in CI. The image was significantly smaller, but then for local development and testing you needed both full CI and SLIM-CI image. This made the scripts and docker image needlessly complex - especially in the wake of coming Production image it turned to be premature optimisation really. While it sped-up (slightly - by 10-20 seconds) some static check jobs in Travis, it increased time needed by developers to have a working environment and to keep it updated every time it was needed (by minutes) Also having two separately managed images made it rather complex to join some of the Travis CI jobs (there is a follow-up change with getting rid of Checklicence image). With this change both static checks and tests are executed using single image. That also opens doors for further simplification of the scripts and easier implementation of production image. ### Jira - [x] My PR addresses the following [Airflow Jira](https://issues.apache.org/jira/browse/AIRFLOW/) issues and references them in the PR title. For example, "\[AIRFLOW-XXX\] My Airflow PR" - https://issues.apache.org/jira/browse/AIRFLOW-5826 ### Description - [x] Here are some details about my PR, including screenshots of any UI changes: ### Tests - [x] My PR adds the following unit tests __OR__ does not need testing for this extremely good reason: ### Commits - [x] My commits all reference Jira issues in their subject lines, and I have squashed multiple commits if they address the same issue. In addition, my commits follow the guidelines from "[How to write a good git commit message](http://chris.beams.io/posts/git-commit/)": 1. Subject is separated from body by a blank line 1. Subject is limited to 50 characters (not including Jira issue reference) 1. Subject does not end with a period 1. Subject uses the imperative mood ("add", not "adding") 1. Body wraps at 72 characters 1. Body explains "what" and "why", not "how" ### Documentation - [x] In case of new functionality, my PR adds documentation that describes how to use it. - All the public functions and the classes in the PR contain docstrings that explain what it does - If you implement backwards incompatible changes, please leave a note in the [Updating.md](https://github.com/apache/airflow/blob/master/UPDATING.md) so we can assign it to a appropriate release
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