Understanding Docker: part 48 – Docker Compose Lifecycle hooks

#docker #devops #beginners #cloud

Understanding Docker can be difficult or time-consuming. In order to spread knowledge about Cloud technologies I started to create sketchnotes about Docker. I think it could be a good way, more visual, to explain Docker (and other technologies like Kubernetes and Istio).

We continue the series of Docker sketchnotes with a focus on preStop and postStart lifecycle hooks on Docker Compose.

As usual, if you like theses sketchnotes, you can follow me, and tell me what do you think. I will publish others sketchs shortly :-).

If you are interested, I published the book in a paperbook version on Amazon: Understanding Docker in a visual way and also in a PDF/ebook version on GumRoad.

If you are also interested in Kubernetes, the book Understanding Kubernetes in a visual way is available also.

5 Playwright CLI Flags That Will Transform Your Testing Workflow

0:56 --last-failed: Zero in on just the tests that failed in your previous run
2:34 --only-changed: Test only the spec files you've modified in git
4:27 --repeat-each: Run tests multiple times to catch flaky behavior before it reaches production
5:15 --forbid-only: Prevent accidental test.only commits from breaking your CI pipeline
5:51 --ui --headed --workers 1: Debug visually with browser windows and sequential test execution

Learn how these powerful command-line options can save you time, strengthen your test suite, and streamline your Playwright testing experience. Click on any timestamp above to jump directly to that section in the tutorial!

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