docs: add the modernize coolify image changes to CHANGELOG.md

CHANGELOG.md

@@ -22,16 +22,19 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
 
 ### Added
 
+- Attach an SBOM attestation to every image, which lists every package of the image
+- Copy the labels of the image to the annotations of its index, ghcr.io reads the description and the license of an image of several platforms from there
 - Choose the update channel of an instance on the update page: stable, preview with betas and release candidates, nightly with a warning that breaking changes are possible, or a custom image such as `pr-1234`
 - Keep the updates of the old channel after a switch to a more stable channel, until the stable release of the installed version is out
 - Publish prereleases from `next` and the release branches, tagged like `4.6.0-beta.1`, and the moving `preview` tag
 - Publish a nightly version twice a day, tagged like `4.6.0-alpha.0.20261026.1`, with the moving `nightly` tag and the nightly channel of the CDN, from `next` or from the release branch while one is in progress
 - Build `main` twice a day when it changed and move the `main` tag on ghcr.io to it, versioned like `4.5.0.20261028.1`, to test fixes before their patch release
 - Publish the image of every pull request from a branch of this repository as `ghcr.io/coollabsio/coolify:pr-<number>`, so a change can be tried before it is merged
-- Add OCI labels with the version and the commit to the image
+- Add OCI labels to the image, such as its version, commit, creation date, license and base image, instead of the labels it took over from its serversideup/php base image
 
 ### Changed
 
+- Compress the image layers with zstd instead of gzip, it compresses better and compresses and decompresses faster, pulling needs Docker Engine 23.0 or later and Coolify requires 24.0
 - Move the helper image to [coollabsio/coolify-helper](https://github.com/coollabsio/coolify-helper), which releases it
 - Replace the release process, `RELEASE.md` describes it
   - Keep the Coolify versions in `release.json`, `stable.coolify` for `main` and the maintenance branches and `preview.coolify` for `next` and the release branches
@@ -76,6 +79,8 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
 
 ### Maintenance
 
+- Add `scripts/size.sh` to measure the compressed and the on-disk size of every platform
+- Comment the size change of every pull request compared with the latest release
 - Add `scripts/clean-manifests.sh` and a workflow that delete the unused manifests from ghcr.io and docker.io, such as the leftovers of the old workflows and the images of closed pull requests, and keep every release, every moving tag, the nightlies of the last 14 days and the images of open pull requests
 - Give every job a name, a timeout, a fixed runner image and a concurrency group
 - Bump `actions/stale` to v11, GitHub Actions removed the Node.js 20 it ran on