auto.sh

#!/usr/bin/bash

set -euo pipefail

RESET="\e[0m"
BOLD="\e[1;37m"

real_name="Benjamin Herzig"
username="bhe"
hostname="BHE-NB3"
AUTOINSTALL_FILE_PATH="$PWD"/ubuntu-autoinstall.yaml

check_has_installed() {
  if ! command -v "$1" &>/dev/null; then
    echo "Error: $1 is not installed"
    return 1
  fi
}

check_non_empty_string() {
  if [[ -z $1 ]]; then
    echo -e "\nError: $2 cannot be empty"
    return 1
  fi
}

check_has_installed openssl

read -p "Enter the user password: " identity_password_raw
check_non_empty_string "$identity_password_raw" "user password"
# https://canonical-subiquity.readthedocs-hosted.com/en/latest/reference/autoinstall-reference.html#password
identity_password=$(echo "$identity_password_raw" | openssl passwd -6 -stdin)

echo
read -p "Enter the storage encryption password: " storage_password
check_non_empty_string "$storage_password" "storage encryption password"

# https://canonical-subiquity.readthedocs-hosted.com/en/latest/reference/autoinstall-reference.html
cat >"$AUTOINSTALL_FILE_PATH" <<EOL
autoinstall:
  version: 1
  locale: "en_US.UTF-8"
  keyboard:
    layout: "us"
  source:
    id: "ubuntu-desktop-minimal"
    search_drivers: true
  storage:
    layout:
      name: "lvm"
      password: "$storage_password"
  identity:
    hostname: "$hostname"
    realname: "$real_name"
    username: "$username"
    password: "$identity_password"
  codecs:
    install: true
  drivers:
    install: true
  oem:
    install: "auto"
  packages:
    - "git"
  timezone: "Europe/Berlin"
  updates: "all"
  shutdown: "reboot"
EOL

echo -e "\nCopy URI for Ubuntu Installer: ${BOLD}file://$AUTOINSTALL_FILE_PATH${RESET}"

Dockerfile

FROM ubuntu:24.04
RUN apt-get update --fix-missing && apt-get install -y sudo=1.9.15* git=1:2.43.0* build-essential=12.10* \
  && apt-get clean \
  && rm -rf /var/lib/lists/*
RUN git clone https://github.com/canonical/subiquity.git /app
WORKDIR /app
RUN make install_deps
# Fix 1: systemd and docker don't play well together, let's fake timedatectl command which is used inside the script
RUN mkdir -p /run/systemd/ && touch /run/systemd/system
RUN rm -f /usr/bin/timedatectl

RUN cat > /usr/bin/timedatectl <<EOL
#!/usr/bin/env bash
python3 -c "import pytz; print('\n'.join(pytz.all_timezones))"
EOL

RUN chmod +x /usr/bin/timedatectl
ENTRYPOINT [ "./scripts/validate-autoinstall-user-data.py" ]

forked from https://github.com/devmatteini/dotfiles/blob/b966eece8d41a2537b0c76610d8f61e701d2f9bd/bootstrap/ubuntu-autoinstall.sh cause I am lazy right now to create an etched usb stick with the autoinstall.yaml on it

Build docker image

docker build -f Dockerfile -t subiquity .

Run the image against a generated autoinstall.yaml:

docker run -v "$PWD":/configs subiquity --no-expect-cloudconfig -vvv /configs/ubuntu-autoinstall.yaml

run auto.sh directly:

eval "$(wget -qO- https://gist.github.com/c0nscience/fefcbfc313b42c2e09ba983c18ac304b/raw/68407fd13e65dade5e4e6a426143b54edd3bef00/auto.sh)"