I want to create some Alpine VMs in VirtualBox.
To do so, I first downloaded both the Standard and the Virtual versions (see https://alpinelinux.org/downloads/), and then I created two vdi from their .iso with
VBoxManage convertfromraw --format VDI alpine-standard-3.10.3-x86_64.iso vm_1.vdi.
Finally, I created both machines in VirtualBox with the two vdi. Everything ok.
However, if I install a package or simply
vi hello.txt in the folder after log in, after reboot, everything is gone. The installed packages, the new files created by me...
Why does this happen? Why is nothing persistent?
note: I've originally wanted to install the Extended version, but I changed my mind when I read that it "runs from RAM" and I associated it with "everything is wiped after reboot", but I may be wrong, of course.