when we use an external disk, we chown 777 the mountpoint so that the
yellowtent user can write to it. the files are created as the 'yellowtent'
user.
when this disk is attached to another server for a restore, the new server's
yellowtent user may not be able to access the files if the uid does not match
between the old and new server.
for this, reason hardcode the uid
ubuntu 18.04 has nginx 1.14
ubuntu 20.04, 22.04 has nginx 1.18
We used a custom nginx for TLSv1.3 support (ssl_protocols TLSv1.3).
OpenSSL itself has TLS 1.3 only from Ubuntu 18.10. This is why we
installed custom packages on Ubuntu 18.04
the baseimage directory was from a time when we used to build a
base image and snapshot it. this is not done anymore.
init-ubuntu.sh - static packages installed one time and managed by ubuntu
installer.sh - packages installed and maintained by cloudron. run before an update.
this can "fail" and the updater can thus abort
start.sh - configuring packages
