base+tools: Add a welcome file and store the license inside the OS

.gitignore

@@ -5,6 +5,7 @@ initrd/boot/moon
 env-local.sh
 initrd/bin/**
 base/usr/**
+base/etc/skel/LICENSE
 .fakeroot
 kernel/config.cmake
 ports/out/

base/etc/skel/welcome

@@ -0,0 +1,14 @@
+Welcome to the Luna operating system!
+You are running on the default user account, selene.
+
+If you are familiar with Unix-style operating systems (like Linux or *BSD), you should be able to use the Luna terminal without much problems.
+
+Following the traditional Unix filesystem structure, programs are installed in /usr/bin (/bin is a symlink to /usr/bin). The command `ls /bin` will show all commands available on your current Luna installation.
+
+Currently, because of driver limitations, the root file system is mounted read-only. Your home folder is writable, but volatile; it is created and populated on boot, and its contents will vanish after a reboot.
+
+The system is booted using the 'init' program. You can read its configuration files in the /etc/init directory to learn more about the boot process.
+
+Luna is free software, released under the BSD-2-Clause license. The license is included in the LICENSE file in your home directory.
+
+View the source code and read more about Luna at https://git.cloudapio.eu/apio/Luna.

base/etc/startup/mount-home.sh

@@ -1,3 +1,6 @@
 #!/bin/sh
+# Create and populate a volatile home directory.
 mount -t tmpfs tmpfs /home/selene
 chown selene:selene /home/selene
+cp /etc/skel/welcome /home/selene/
+cp /etc/skel/LICENSE /home/selene/

tools/install.sh

@@ -31,3 +31,5 @@ mkdir -p base/tmp
 
 rm -f base/bin
 ln -s usr/bin base/bin
+
+cp $LUNA_ROOT/LICENSE base/etc/skel/LICENSE