Also, to automate the pull, put this in the app's cron:
* * * * * echo "==> Pulling" && cd /app/data/helloworld && git pull
Then, in the logs, you will see:
Mar 20 15:48:02 ==> Pulling
Mar 20 15:48:02 From https://git.cloudron.space/root/helloworld
Mar 20 15:48:02 8e9fa9a..6a79ead master -> origin/master
Mar 20 15:48:02 Updating 8e9fa9a..6a79ead
Mar 20 15:48:02 Fast-forward
Mar 20 15:48:02 index.php | 3 ++-
Mar 20 15:48:02 1 file changed, 2 insertions(+), 1 deletion(-)
It pulls every minute for testing, so you might want to adjust the cron pattern.