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.
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Signed-off-by: George Araújo <george.gcac@gmail.com>
summary:
- adds prettier formatter configuration
- formats the entire repo using prettier, ignoring minified files
(`*.min.css`) and heavy generated html
- changes extensions of all `.html` files to `.liquid`, which is more
correct and necessary for prettier to work correctly
- replaces "%-" and "-%" with just "%" — manual liquid formatting using
minus signs is superfluous since we are compressing and minifying the
code anyway
- adds CI action for running prettier check on PR and pushes to master