Switch custom building of the login initramfs to linuxkkit

.gitignore

@@ -1,7 +1,9 @@
 challenge-cmdline
 challenge-initrd.img
 challenge-kernel
+login-cmdline
+login-initrd.img
+login-kernel
 server-cmdline
 server-initrd.img
 server-kernel
-tftp/initramfs-login.img

initramfs-login/etc/mdev.conf

@@ -1 +0,0 @@
-$MODALIAS=.* 0:0 660 @modprobe "$MODALIAS"

initramfs-login/init

@@ -1,15 +0,0 @@
-#!/bin/sh
-
-mount -t proc proc /proc
-mount -t sysfs sysfs /sys
-
-echo 0 > /proc/sys/kernel/printk
-
-busybox --install -s
-
-mknod /dev/null c 1 3
-mknod /dev/tty c 5 0
-
-mdev -s
-
-exec setsid sh -c 'exec sh /init2 </dev/tty1 >/dev/tty1 2>&1'

initramfs-login/init2

@@ -1,11 +0,0 @@
-#!/bin/sh
-
-for mod in e100 e1000 e1000e 8139cp 8139too r8169 virtio-net; do
-    modprobe "${mod}"
-done
-
-ip link set eth0 up && udhcpc > /dev/null 2> /dev/null &
-
-/bin/login
-
-reboot -f

login.yml

@@ -0,0 +1,67 @@
+kernel:
+  image: linuxkit/kernel:4.9.82
+  cmdline: "console=tty0 console=ttyS0 quiet panic=-1"
+
+init:
+  - busybox
+
+files:
+  - path: /bin/login
+    source: login-app/login-app
+    mode: "0755"
+
+  - path: /etc/terminfo/l/linux
+    source: /etc/terminfo/l/linux
+    mode: "0644"
+  - path: /etc/ssl/certs/DST_Root_CA_X3.pem
+    source: /etc/ssl/certs/DST_Root_CA_X3.pem
+    mode: "0644"
+  - path: /usr/share/consolefonts/Inconsolata-16b.psf.gz
+    source: fonts/Inconsolata-16b.psf.gz
+    mode: "0644"
+  - path: /usr/share/udhcpc/default.script
+    source: /usr/share/udhcpc/default.script
+    mode: "0755"
+
+  - path: /init
+    contents: |
+      #!/bin/sh
+
+      /bin/mount -t proc proc /proc
+      /bin/mount -t sysfs sysfs /sys
+
+      echo 0 > /proc/sys/kernel/printk
+
+      mknod /dev/null c 1 3
+      mknod /dev/tty c 5 0
+
+      mdev -s
+
+      exec setsid sh -c 'exec sh /init2 </dev/tty1 >/dev/tty1 2>&1'
+    mode: "0755"
+  - path: /init2
+    contents: |
+      #!/bin/sh
+
+      zcat /usr/share/consolefonts/Inconsolata-16b.psf.gz | loadfont
+
+      for mod in e100 e1000 e1000e 8139cp 8139too r8169 virtio-net; do
+          modprobe "${mod}"
+      done
+
+      {
+          ip link set eth0 up && udhcpc
+          ip route add 172.23.200.0/24 via 172.23.255.1
+          echo "nameserver 172.23.200.2" > /etc/resolv.conf
+      } > /dev/null 2> /dev/null &
+
+      /bin/sh
+      /bin/login
+
+      reboot -f
+    mode: "0755"
+  - path: /etc/resolv.conf
+    contents: |
+      domain adlin.nemunai.re
+      nameserver 172.23.200.2
+    mode: "0644"