Hey there! Those suffixes you're seeing on Node.js Docker images are super common, and each one tells you something specific about the image's setup. Let me break them down for you:

• onbuild: This is a special "auto-build" variant of the Node image. It comes pre-configured with ONBUILD Docker instructions that automate common steps for Node projects—like copying your package.json, running npm install to install dependencies, and copying your application code into the container. It's designed to get you up and running quickly with minimal Dockerfile setup, but keep in mind that it assumes your project follows a standard structure. If your project has a non-standard layout (like custom dependency paths), this might cause issues. Also, note that while convenient for simple projects, it's not always the best choice for production since it can hide some build details.

• jessie / stretch / buster / bullseye: These are codenames for different versions of the Debian Linux distribution, which many official Node images are based on.

  • jessie = Debian 8 (an older, stable release with long-term support, though it's now end-of-life)
  • stretch = Debian 9 (a newer stable release than jessie, with updated system libraries and packages)
  • You might also see newer ones like buster (Debian 10) or bullseye (Debian 11) on more recent tag pages.
    Choosing between these depends on your project's dependencies—if your app relies on a specific version of a system library that only exists in an older Debian release, you'd pick the corresponding suffix. Newer Debian versions generally have more up-to-date packages, which can be better for security and compatibility with newer Node features.

That should cover what those suffixes mean. If you're trying to pick the right image for your project, I'd recommend going with a recent non-onbuild tag (like node:20-bullseye) unless you specifically need the auto-build convenience of onbuild or the older system libraries from jessie/stretch.

内容的提问来源于stack exchange，提问作者Nate Gu