`update -h` script help option non-working examples

[MikeMcC399]

Environment

• Platform: Ubuntu 24.04.4 LTS
• Docker Version: N/A
• Node.js Version: N/A
• Image Tag: N/A

Expected Behavior

The help text, which is invoked with ./update.sh -h, should provide a list of working commands.

Current behavior

The help text is as follows:

$ ./update.sh -h

  Update the node docker images.

  Usage:
    ./update.sh [-s] [MAJOR_VERSION(S)] [VARIANT(S)]

  Examples:
    - update.sh                      # Update all images
    - update.sh -s                   # Update all images, skip updating Alpine and Yarn
    - update.sh 8,10                 # Update all variants of version 8 and 10
    - update.sh -s 8                 # Update version 8 and variants, skip updating Alpine and Yarn
    - update.sh 8 alpine             # Update only alpine's variants for version 8
    - update.sh -s 8 bullseye        # Update only bullseye variant for version 8, skip updating Alpine and Yarn
    - update.sh . alpine             # Update the alpine variant for all versions

  OPTIONS:
    -s Security update; skip updating the yarn and alpine versions.
    -b CI config update only
    -h Show this message

1. Using alpine as an argument, as in ./update.sh . alpine, does not target alpine variants. Instead it updates all Alpine and Debian variants.
2. The text for the -s suggests that Dockerfiles for Alpine are not updated, even though they are.
3. The text for bullseye does not mention that bullseye-slim will not be targeted, although this might be expected.
4. Using the Node.js versions 8 & 10 causes all active Node.js versions to be updated. Node.js 8 & 10 are already in EOL status.
5. The -b option produces an error "illegal option -- b"

Possible Solution

Update the help text in update.sh

• use Node.js 22 & 24 as example versions
• use alpine3.23 as an example
• include both trixie and trixie-slim as separate Debian variant examples

Steps to Reproduce

git clone https://github.com/nodejs/docker-node
cd docker-node

Execute each of the examples, observe the logs and check the changes made (git diff)

Additional Information