Update documentation archive process to work with new site

[mraible]

The new website uses Docusaurus instead of Jekyll, so we need to modify scripts to accommodate this change and add the appropriate banner at the top.

[SvMak]

@mraible Could you please check the solution to speed up the release of 8.7.1?

[mraible]

I tried checking out your branch from #13 and running ansible-playbook -v playbooks/generator-jhipster-prepare.yml. It seems to create the site OK, but when I tried to serve it from a parent directory, it gave me an error.

I'm guessing this is because jhipster/jhipster.github.io#1390 needs to be merged before it will work?

[SvMak]

I tried checking out your branch from #13 and running ansible-playbook -v playbooks/generator-jhipster-prepare.yml. It seems to create the site OK, but when I tried to serve it from a parent directory, it gave me an error.

I'm guessing this is because [jhipster/jhipster.github.io#1390](https://github.com/jhipster/jhipster.github.io/pull/1390) needs to be merged before it will work?

Yes, absolutely right, you need merge updates for jhipster.github.io

[mraible]

I tried that locally and it looks good!

I'll work on merging these and do the release tomorrow.

[SvMak]

@mraible To fix the old documentation archive I made two PRs and they both need to be merged.