Script to deploy a target directory to `gh-pages` branch and force server-side cache to update

gh-pages-deploy.sh

#!/bin/bash
directory=_site
branch=gh-pages
build_command() {
  jekyll build
}

echo -e "\033[0;32mDeleting existing $branch...\033[0m"
git push origin --delete $branch
git branch -D $branch

echo -e "\033[0;32mSetting up new $branch branch\033[0m"
git checkout --orphan $branch
git reset --hard
git commit --allow-empty -m "Init"
git checkout master

echo -e "\033[0;32mDeleting old content...\033[0m"
rm -rf $directory

echo -e "\033[0;32mChecking out $branch....\033[0m"
git worktree add $directory $branch

echo -e "\033[0;32mGenerating site...\033[0m"
build_command

echo -e "\033[0;32mDeploying $branch branch...\033[0m"
cd $directory &&
  git add --all &&
  git commit -m "Deploy updates" &&
  git push origin $branch

echo -e "\033[0;32mCleaning up...\033[0m"
git worktree remove $directory

This script is a fork of an excellent guide by @sangsoonam and tackles the problem of Github's server-side caching that sometimes takes hours to update.

Currently, the only workable solution is to delete the gh-pages branch entirely that will force the cache to be updated (lines 8-16).

In my limited experience update may take from 20 seconds up to 5 minutes. Triggering the change from Settings (by switching to master and back to gh-pages) seemingly helps. Will update this comment on any related findings in the future.