The action does not take into account all cases of how an image is stored, causing errors like the ones below on image pull. I exclude `base` until I find a solution.
*Error: internal error: unable to copy from source ...: initializing source ...: reading manifest ... in ghcr.io/searxng/base: manifest unknown*
Instead of using Wolfi base images from cgr.dev and making that mess on the Dockerfile, why don't we build the base images ourselves from Wolfi repos with apko? The intention of this is to simplify the main Dockerfile and avoid having to patch the base image every time, it also simplifies some steps like image ownership management and provides extremely fast builds.
Currently, we have 1100~ cache images uploaded to GHCR that weigh more than 300 MB each (most of them are layers from the second phase of the Dockerfile that were uploaded by mistake, read below). To avoid problems, I have set up a new job in a new workflow to be run weekly purging all images older than 1 week, but leaving always the 100 most recent ones.
Only the builder images should be uploaded to cache, the actual behaviour not only slows down the time for building the container, but also wastes lots of space by saving large and useless layers to GHCR that will never be used again.
