post_install() {
  echo "To setup Mastodon, enable and start PostgreSQL and Redis:
# systemctl enable --now postgresql redis
Create the Mastodon PostgreSQL user and grant it the ability to create databases with:
# sudo -u postgres createuser -d mastodon
Then, run:
# cd /var/lib/mastodon
# sudo chown mastodon:mastodon -R .
# sudo -u mastodon RAILS_ENV=production NODE_OPTIONS=--openssl-legacy-provider bundle exec rails mastodon:setup
Finally, enable and start all the required services:
# systemctl enable --now mastodon.target"
}

post_upgrade() {
  cd /var/lib/mastodon

  echo "Setting ownership of mastodon files"
  find -path ./public/system -prune -o -exec chown -h mastodon:mastodon {} +
  echo "Upgrading database schema"
  sudo -u mastodon RAILS_ENV=production bundle exec rails db:migrate
  echo "Precompiling assets"
  sudo -u mastodon RAILS_ENV=production NODE_OPTIONS=--openssl-legacy-provider bundle exec rails assets:precompile
}