Create container for page/blog generation

[gbraad]

As seen in https://github.com/crc-org/blog/actions/runs/12025317350/job/33522257802, the version of Hugo may be newer and might cause issues. Let's update the blog and create a static container to prevent this kind of issues in future.

[cfergeau]

The problem is https://mitrich.me/en/posts/anubis-closed/ , not the hugo version per-se

[cfergeau]

See also #20 (comment)