How to create Dock Emacs/Aquamacs Icon reading bash init scripts and more

Emacs.app.sh

# See https://www.emacswiki.org/emacs/EmacsForMacOS
#
# Create an app that runs a shell script that runs Emacs.app, like this: 
# 1. use Finder to navigate to /Applications and double-click Automator.app.
# 2. Select the document type “Application” and click “Choose”. 
# 3. In the list on the left, select “Library”. 
# 4. In the next list, find “Run Shell Script” and drag it into the workflow area on the right. 
# 5. In the new shell script, delete the text and replace it with:

EMACS=/Applications/Aquamacs.app/Contents/MacOS/Aquamacs
EMACSCLIENT=/Applications/Aquamacs.app/Contents/MacOS/bin/emacsclient

cd # start in my home directory

if pgrep -U $(id -u) $(basename $EMACS) >/dev/null; then
  if [ "$#" -eq 0 ]; then
    # set -- -e '(select-frame-set-input-focus (car (or (visible-frame-list) (frame-list)))'
    echo "\"$EMACSCLIENT\" -e '(select-frame-set-input-focus (car (or (visible-frame-list) (frame-list))))'" | bash --login -s "$@";
  else
    echo "\"$EMACSCLIENT\" -n \"\$@\"" | bash --login -s "$@";
  fi
else
  echo "\"$EMACS\" \"\$@\"" | bash --login -s "$@" &
  disown %-
fi