"artifacts for pages are too large"

We're hit by the size limitation once again :(

• #414 (moved)
• #418 (closed)

I pushed an MR to compress the images on master (we already do this for the stable branches), but I'm afraid this won't help us much !630 (merged).

We're at a point that gitlab#16610 (closed) should be implemented ASAP.

We should also consider to minify the assets #183 (closed).