Launcher rebuild app pull the latest discourse from github

Support Self-hosting
10

I did the following changes to the launcher

echo "    --pull-git                 Pull the latest git repository"
  echo "    --pull-image               Pull the latest Docker image"

pull_git=false
pull_image=false
rebuild)
      if [ "$(git symbolic-ref --short HEAD)" = "master" ] && [ "$pull_git" = true ]; then
        git branch -m master main
        git fetch origin
        git branch -u origin/main main
        git remote set-head origin -a
      fi
....

With this I’m able to avoid to update everytime I do the rebuild. It allow the plugin to be installed.