@robi Actually for me, it wasn't really scripted and was more manual in nature.
Basically ran the cloudron list command, then copied out all the WordPress manifest ID types and put it together in a command sequence like this:
cloudron push --app <www.example1.com> /Users/<username>/Desktop/php.ini /app/data/php.ini && \
cloudron push --app <www.example2.com> /Users/<username>/Desktop/php.ini /app/data/php.ini && \
cloudron push --app <www.example3.com> /Users/<username>/Desktop/php.ini /app/data/php.ini && \
cloudron push --app <www.example4.com> /Users/<username>/Desktop/php.ini /app/data/php.ini && \
cloudron push --app <www.example5.com> /Users/<username>/Desktop/php.ini /app/data/php.ini && \
cloudron push --app <www.example6.com> /Users/<username>/Desktop/php.ini /app/data/php.ini && \
cloudron push --app <www.example7.com> /Users/<username>/Desktop/php.ini /app/data/php.ini && \
cloudron push --app <www.example8.com> /Users/<username>/Desktop/php.ini /app/data/php.ini && \
cloudron push --app <www.example9.com> /Users/<username>/Desktop/php.ini /app/data/php.ini && \
cloudron push --app <www.example0.com> /Users/<username>/Desktop/php.ini /app/data/php.ini
...etc.
I haven't scripted it, but I will certainly look into doing that in the future if these types of tasks come up more often.