Container Image Optimisation: Best Practices
Welcome to today's video where we explore five best practices for creating efficient and secure container images.
I begin with the importance of version pinning. Discover why it's crucial to specify a specific Docker base version to ensure image reproducibility and avoid potential compatibility issues down the road.
Next, we explore the use of SCRATCH, the smallest Docker image, to reduce image size, enhance speed, and bolster security. Learn how minimising the image's footprint can improve efficiency and safety.
We'll also dive into the art of minimising image size further through techniques like collapsing multiple Docker commands into a single layer and leveraging multi-stage builds for optimal results.
Additionally, we discuss the concept of single responsibilities within container images and why it's essential to run a single process instead of multiple processes. Discover how this practice can help maintain container simplicity and efficiency.
Lastly, we unravel the PID 1 problem, explaining its significance and offering insights into managing it effectively within your containers. Learn about tools like tini that can simplify the process.
Stay tuned for more container-related insights. If you have questions or need clarification on any topic covered, feel free to leave a comment. Don't forget to subscribe for future updates. See you in the next video!
Links:
🔗 https://github.com/krallin/tini
🔗 https://blog.phusion.nl/2015/01/20/do...
00:00 - Introduction: Optimiing Container Images
00:25 - Discouraging the Use of "Latest" Tag
00:56 - The Importance of Version Pinning
02:21 - Using SCRATCH for Minimal Images
03:57 - Minimising Image Size
05:09 - Multi-Stage Builds for Efficiency
06:43 - Copying Files Between Stages
07:58 - Keeping Images with Single Responsibilities
08:51 - Understanding the PID 1 Problem
10:36 - Managing PID 1 with Initiators
11:09 - Conclusion and Good Practices
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