Add pagefind to site build container

[apburnes]

When a user is building their site, they want to be able to implement content filtering with minimal effort. Add pagefind to the build container so they can build search and filter index on site build.

Notes

• Users can install pagefind via their npm package but installing via npm takes additional disk space
• Compare disk size between npm install vs the binaries in the image build
• Install binary docs

Acceptance Criteria

• Record the image size of the current site build container
• Install pagefind to the build container and allow the customer user access to the tool
• Record and compare image size before and after
  • Before: 720.74 MB
  • After Pagefinde addition: 845.08 MB

[kevinsmaster5]

I made a test branch in pages-site-gantry to verify the method used to add pagefind at the docker container level
https://github.com/cloud-gov/pages-site-gantry/compare/test-pagefind-docker?expand=1

Screen recording testing in the container

Screen.Recording.2026-02-19.at.9.48.24.AM.mov

[kevinsmaster5]

I experimented using a pages-site-gantry build where I set up a Docker instance and looked at the Image size for:
Letting npm install pagefind ( 4.89 GB )
Removing pagefind from package.json ( 4.53 GB )
Including an install at the docker container ( 4.78 GB )

Per Image created it looks like a savings of 110 MB.

[apburnes]

Those image sizes seem too large. How did you query the image size?