The GitHub actions were running everytime a new commit was made to the
repo, but that wasn't needed. For example, we don't need to try to
create a new docker image if the libraries didn't change, same to build
the whole site after a change in the README.md.
---------
Signed-off-by: George Araújo <george.gcac@gmail.com>
Added another GitHub action to check for broken local links on version
of the site that will be deployed.
The `broken-links` action check for broken links considering
documentation files (like INSTALLING.md) and also pages like
[_pages/about.md](https://github.com/alshedivat/al-folio/blob/master/_pages/about.md),
but it can't check for broken links when the link will be handled by
jekyll tags (like in
[_pages/blog.md](https://github.com/alshedivat/al-folio/blob/master/_pages/blog.md).
With `broken-links-site` we can check if all the links that will be used
on the final site that refer to local files are correct. Focusing only
on local files since this would end up calling too many checks for
library files, like
`https://unpkg.com/bootstrap-table@1.22.1/dist/bootstrap-table.min.css`.
---------
Signed-off-by: George Araújo <george.gcac@gmail.com>
George