Move blog to separate repository
From https://gitlab.com/gitlab-com/www-gitlab-com/issues/1265#note_42447351, here's the status:
https://gitlab.com/gitlab-com/blog contains a stripped down (and slightly stale) version of www-gitlab-com repository with mostly just the blog. Here's what we need to do:
* [x] Make all URLs linked to use the `/blog` prefix.
What I've tried: middleman-blog has a `prefix` configuration, and Middleman has a `:http_prefix` configuration value. It seems that if we set the `prefix` in the middleman-blog, we have to move everything in `sources/` into the `sources/blog` directory. middleman-blog then generates everything in the `public/blog` directory.
However, all helper functions (e.g. `javascript_include_tag`) used by Middleman won't know to use the `/blog` prefix, and hence JavaScript assets will be pointing to `/javascripts/`, for example. If you set `http_prefix`, the JavaScript paths correctly use `/blog/javascripts`, but you end up getting a double `/blog/blog/2017` for blog entries.
We might be able to fix this by setting `:css_dir`, `:js_dir`, and `:images_dir` independently for Middleman: http://willschenk.com/building-sites-with-middleman/
* [x] Add a redirection rule in the NGINX about.gitlab.com configuration to migrate `/20xx/` -> `/blog/20xx`.
* [ ] rsync or copy new blog posts/images from www-gitlab-com into the new repository.
* [ ] Fix the `.gitlab-ci.yml` on both repositories to deploy to different internal paths (e.g. `blog-public` and `www-public`).
* [ ] Adjust the about.gitlab.com NGINX configuration to point `/blog` to `blog-public`, and everything else to `www-public` dir.
* [x] Adjust the about.gitlab.com configuration to work with Review Apps.
* [ ] Optional: Run `git filter-branch` or some sort to rewrite history to trim down the repository size.
I could use some help with this. @axil, @rspeicher, perhaps you could lend a hand?
issue