Initial commit - it works!

.gitignore

@@ -0,0 +1,2 @@
+/build/
+parameters.env

build.sh

@@ -0,0 +1,29 @@
+#!/bin/bash
+
+source parameters.env
+
+rm -rf build
+mkdir build
+
+eval "cat <<~
+$(cat src/cmdline.txt)
+~" > build/cmdline.txt
+
+mkdir build/cloud-init
+
+eval "cat <<~
+$(cat src/user-data)
+~" > build/cloud-init/user-data
+
+cp src/meta-data build/cloud-init/
+cp src/initial-setup.sh build/cloud-init/
+cp src/install-torch.sh build/cloud-init/
+cp src/torch-agent_0.0.4-1_all.deb build/cloud-init/
+
+mkdir build/cloud-init/torch-config
+cp -r $TORCH_CONFIG_DIR/* build/cloud-init/torch-config/
+
+tar -C build -czvf build/rpi-cloud-init.tgz cmdline.txt cloud-init
+
+rm -rf build/cloud-init
+rm build/cmdline.txt

src/cmdline.txt

@@ -0,0 +1 @@
+net.ifnames=0 dwc_otg.lpm_enable=0 console=serial0,115200 console=tty1 root=LABEL=writable rootfstype=ext4 elevator=deadline rootwait fixrtc ipv6.disable=$DISABLE_IPV6 ds=nocloud;s=/boot/firmware/cloud-init/

src/initial-setup.sh

@@ -0,0 +1,30 @@
+#!/bin/sh -e
+
+export DEBIAN_FRONTEND=noninteractive
+
+apt-get -y purge\
+ cloud-init cloud-guest-utils\
+ cloud-initramfs-copymods cloud-initramfs-dyn-netconf\
+ open-iscsi
+rm -rf /etc/cloud/ /var/lib/cloud/
+
+apt-get update
+
+apt-get -y\
+ -o Dpkg::Options::="--force-confdef"\
+ -o Dpkg::Options::="--force-confold"\
+ upgrade
+
+apt-get -y install\
+ vim\
+ gparted\
+ libc6:armhf libstdc++6:armhf\
+ lxterminal\
+ usbmount
+
+# Workaround for usbmount bug on Bionic
+mkdir -p /etc/systemd/system/systemd-udevd.service.d
+echo "[Service]\nMountFlags=shared\n" >\
+ /etc/systemd/system/systemd-udevd.service.d/override.conf
+systemctl daemon-reload
+service systemd-udevd --full-restart

src/install-torch.sh

@@ -0,0 +1,7 @@
+#!/bin/sh -e
+
+apt-get -y install /boot/firmware/cloud-init/torch-agent_0.0.4-1_all.deb
+cp -r /boot/firmware/cloud-init/torch-config/* /etc/torch/
+chown torch -R /etc/torch
+systemctl daemon-reload
+systemctl enable torch-agent

src/meta-data

@@ -0,0 +1 @@
+dsmode: local

src/user-data

@@ -0,0 +1,33 @@
+#cloud-config
+
+# The networking setup is a bit of a hack, because the cloud-init network
+# configuration doesn't support WiFi, see
+# https://cloudinit.readthedocs.io/en/latest/topics/network-config-format-v2.html.
+
+users:
+  - name: $USERNAME
+    gecos: $USERFULLNAME
+    groups: [sudo, users]
+    sudo: ALL=(ALL) NOPASSWD:ALL
+    lock_passwd: false
+    shell: /bin/bash
+    ssh_authorized_keys:
+      - $SSH_PUBKEY
+
+runcmd:
+  # Disable optional PAM features for faster SSH login
+#  - 'mv /etc/pam.d/sshd /etc/pam.d/sshd.bak'
+#  - 'sed "s/^session[ \t]\+optional/#\0/" /etc/pam.d/sshd.bak > /etc/pam.d/sshd'
+
+  # Back up the SSH default config and activate the new config
+#  - 'mv /etc/ssh/sshd_config /etc/ssh/sshd_config.bak'
+#  - 'mv /etc/ssh/sshd_config.new /etc/ssh/sshd_config'
+#  - 'service ssh reload'
+
+  # Multi-arch support on aarch64
+  - 'dpkg --add-architecture armhf'
+
+  # Run optional script for additoinal package setup
+  - '/boot/firmware/cloud-init/initial-setup.sh'
+  - '/boot/firmware/cloud-init/install-torch.sh'
+  - 'reboot now'