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教的超好~~ 不過 ~~ 一直瘋狂方便灌東西,空間一下少好多阿~~ XDDD

  • section3-35


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

Docker Image Specification