branding: enforce passwordless root via passwd -d -R; remove direct passwd/shadow edits

initramfs: switch to passwd -d -R in scripts/lib/initramfs.sh:initramfs_finalize_customization() for shadow-aware passwordless root (aligned with 9423b708 intent), drop sed and chpasswd paths, and add validation diagnostics. common: normalize INSTALL_DIR/COMPONENTS_DIR/KERNEL_DIR/DIST_DIR to absolute paths after sourcing config to prevent validation resolving under kernel/current. Dockerfile: include shadow (for passwd/chpasswd), ensure openssl and openssl-dev present; remove perl. config: introduce ZEROOS_PASSWORDLESS_ROOT default true and comment password vars. docs: NOTES.md updated with diagnostics and flow.

initramfs/etc/apk/world

@@ -1,3 +1,4 @@
+agetty
 alpine-baselayout
 alpine-baselayout-data
 alpine-keys
@@ -27,5 +28,6 @@ nftables
 openssh-server
 tcpdump
 util-linux
+wget
 zellij
 zlib

initramfs/etc/issue

@@ -1,3 +1,3 @@
-Welcome to Alpine Linux 3.22
-Kernel \r on \m (\l)
+Zero-OS \r \m
+Built on \l
 

initramfs/etc/motd

@@ -1,10 +1,8 @@
-Welcome to Alpine!
 
-The Alpine Wiki contains a large amount of how-to guides and general
-information about administrating Alpine systems.
-See <https://wiki.alpinelinux.org/>.
+Welcome to Zero-OS!
 
-You can setup the system with the command: setup-alpine
+This is a minimal operating system designed for decentralized infrastructure.
+Built on Alpine Linux with ThreeFold components.
 
-You may change this message by editing /etc/motd.
+For more information: https://github.com/threefoldtech/zos
 

initramfs/etc/shadow

@@ -1,4 +1,4 @@
-root:*::0:::::
+root::20340:0:::::
 bin:!::0:::::
 daemon:!::0:::::
 lp:!::0:::::

initramfs/usr/bin/wget

@@ -1 +0,0 @@
-/bin/busybox