Add automated link checker

[froschdesign]

Feature Request

Beside the Markdown linting it would be great if we can check all the links in the Markdown files.

Q	A
New Feature	yes
BC Break	no

Summary

A potential candidate would be markdown-link-check which can be installed via npm.

[froschdesign]

Related to https://github.com/laminas/documentation/issues/16

[gsteel]

This tool doesn't support globbing, but I managed to run it out of docker with find with something like find ./docs/book -name \*.md -exec docker run -v ${PWD}:/tmp:ro --rm -i ghcr.io/tcort/markdown-link-check:stable /tmp/{} \;

Because it's one file per run, there's no overall return and getting the output into GHA will be interesting.

Not sure how to proceed with this…

[froschdesign]

@gsteel Thank you for the testing. 👍🏻

Maybe this one: https://github.com/marketplace/actions/lychee-broken-link-checker

[gsteel]

That's more like it. For i18n:

lychee docs/book -f json
{
  "total": 62,
  "successful": 61,
  "failures": 1,
  "unknown": 0,
  "timeouts": 0,
  "redirects": 0,
  "excludes": 0,
  "errors": 0,
  "cached": 0,
  "fail_map": {
    "docs/book/view-helpers/plural.md": [
      {
        "url": "https://developer.mozilla.org/en-US/docs/Mozilla/Localization/Localization_and_Plurals",
        "status": "Failed: Network error"
      }
    ]
  }
}

[gsteel]

It's also a lot faster…

[froschdesign]

@gsteel Is this an option for us: https://github.com/marketplace/actions/lychee-broken-link-checker ?