[openstreetmap/openstreetmap-website] Update Dockerfile to include image manipulation binaries. (PR #4254)

[Eric Theise]

A number of developers on the OpenHistoricalMap project use Docker. We've not synced with this, the parent project, for a while, and in doing so we found that libraries such as `advpng`, `gifsicle`, `jhead`, `pngcrush`, `svgo` and so on–mentioned in `INSTALL.md`–were not being installed, causing warnings when running a `docker compose up`.

This pull request adds those libraries to `Dockerfile`.

I'll note that there is still one warnings
```
WARN: advpng none at /usr/bin/advpng (== none) is of unknown version
```
which is [said to be a result of bad packaging](https://bugs.launchpad.net/ubuntu/+source/advancecomp/+bug/1797662).

You can view, comment on, or merge this pull request online at:

  https://github.com/openstreetmap/openstreetmap-website/pull/4254

-- Commit Summary --

  * Update Dockerfile to include image manipulation binaries.
  * Rethinking svgo install.

-- File Changes --

    M Dockerfile (9)

-- Patch Links --

https://github.com/openstreetmap/openstreetmap-website/pull/4254.patch
https://github.com/openstreetmap/openstreetmap-website/pull/4254.diff

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