Deploying a demo amd64 debian-based OS via ostree

This is a prototype outline for building and deploying a debian based OS
with ostree.  For purposes of demonstration, the OS runs from a bootable
USB device on a UEFI capable amd64 machine.  Once a USB device is
created and booted, the OS can be updated using a simple shell script.

<https://ostreedev.github.io/ostree/>
<https://www.nin.wiki/Halo_numbers>

1 files changed, 47 insertions, 0 deletions

diff --git a/hooks/build-os/80-firstboot-repart-growfs b/hooks/build-os/80-firstboot-repart-growfs
new file mode 100755
index 0000000..78648cc
--- /dev/null
+++ b/hooks/build-os/80-firstboot-repart-growfs
@@ -0,0 +1,47 @@
+#!/bin/bash -xe
+
+set -o pipefail
+
+# Configure systemd-growfs-root
+mkdir "${root:?}"/etc/systemd/system/systemd-growfs-root.service.d
+
+cat > "${root:?}"/etc/systemd/system/systemd-growfs-root.service.d/override.conf << EOF
+[Unit]
+ConditionFirstBoot=yes
+
+[Service]
+ExecStart=/usr/lib/systemd/systemd-growfs /sysroot
+
+[Install]
+WantedBy=multi-user.target
+EOF
+
+chroot "${root:?}" systemctl enable systemd-growfs-root.service
+
+# Configure systemd-repart
+
+mkdir "${root:?}"/etc/repart.d
+
+cat > "${root:?}"/etc/repart.d/50-root.conf << EOF
+[Partition]
+Type=linux-generic
+GrowFileSystem=yes
+EOF
+
+chroot "${root:?}" apt-get install -y systemd-repart
+
+# Configure systemd-firstboot
+
+mkdir "${root:?}"/etc/systemd/system/systemd-firstboot.service.d
+cat > "${root:?}"/etc/systemd/system/systemd-firstboot.service.d/install.conf << EOF
+[Service]
+ExecStart=
+ExecStart=/usr/bin/systemd-firstboot --prompt
+
+[Install]
+WantedBy=sysinit.target
+EOF
+
+chroot "${root:?}" systemctl enable systemd-firstboot.service
+
+rm "${root:?}"/etc/{machine-id,localtime}