Docker Mastery: Section 4 - Whats in An Image (and what isnt)
Tags: udemy-docker
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- section3-35
Udemy
This Section
- All about images, the builing blocks of containers
- Wht’s in an image (and what isn’t)
- Using Docker Hub registry
- Managing our local image cache
- Building our own images
What’s In An Image (And What’s Isn’t)
- App binaries and dependencies
- Metatdata about the image data and how to run the image
- official definition: “An Image is an ordered collection of root filesystem changes and the corresponding execution parameters for use within a container runtime.”
- Not a complete OS, No kernel, kernel modules (e.g. drivers)
- Small as one file (your app binary) like a golang static binary
- Big as a Ununtu distro with apt, and Apache, PHP, and more installed