AppImage format and how it works.
Again, do NOT try to run this on your production machine. For that matter, don't try to
-run it on anything other than a dedicated build host. It will ERASE /usr/local/citadel
-and /usr/local/webcit during the build process.
+run it on anything other than a dedicated build host. It may ERASE data you intended to
+keep.
If you're an end user you shouldn't have any need to do this at all. The whole point of
this is that we can supply ready-to-run binaries that will run on any Linux/Linux system
binary should be able to run. The distribution does not matter -- for example, a
binary built on Debian should run fine on Ubuntu or Red Hat or whatever -- but the C
library and other very base system libraries are only upward compatible, not downward
-compatible. For example, at the time of this writing, I am building on Ubuntu 14 and
+compatible. For example, at the time of this writing, I am building on Ubuntu 16 and
it's early 2021.