bootstrap-debian.sh

#!/usr/bin/env bash
#
# Name:     bootstrap-debian.sh
# Author:   Lorenzo Murarotto <lnzmrr@gmail.com>
# Usage:    ./bootstrap-debian.sh <USERNAME> <USER_UID> <USER_GID>

echo "Starting dependency installation procedure."

set -e

if [ ! -f /etc/debian_version ]; then
    echo "Error: this script can only run in debian based distributions."
    exit 1
fi

if [ "$(id -u)" -ne 0 ]; then
    echo 'Error: this script must be run a root.'
    exit 1
fi

USERNAME=${1:-"$(awk -v val=1000 -F ":" '$3==val{print $1}' /etc/passwd)"}
USERNAME=${USERNAME:-"ubuntu"}
USER_UID=${2:-1000}
USER_GID=${3:-1000}

DEBIAN_FRONTEND=noninteractive
# Suppress an apt-key warning about standard out not being a terminal. Use in this script is safe.
APT_KEY_DONT_WARN_ON_DANGEROUS_USAGE=true

echo "Installing dependencies."

apt-get update -y

# Upgrade packages
apt-get upgrade -y

# Install apt-utils to avoid debconf warning
apt-get install -y --no-install-recommends apt-utils 2> >( grep -v 'debconf: delaying package configuration, since apt-utils is not installed' >&2 )

# Install basic utilities
apt-get install -y --no-install-recommends \
locales \
sudo \
curl \
xz-utils \
ca-certificates \
zsh \
git

# Generate locale for correct unicode character handling.
# see https://stackoverflow.com/questions/28405902/how-to-set-the-locale-inside-a-debian-ubuntu-docker-container
echo "Generating locales."

sed -i -e 's/# en_US.UTF-8 UTF-8/en_US.UTF-8 UTF-8/' /etc/locale.gen
locale-gen

# Handling of RLIMIT_CORE appears to be buggy in Linux containers. This workaround disables setrlimit warning.
# see https://github.com/sudo-project/sudo/issues/42
echo "Disabling setrlimit warning."

echo "Set disable_coredump false" >> /etc/sudo.conf

# Create a non-root user with sudo permissions.
# see https://code.visualstudio.com/docs/remote/containers-advanced#_adding-a-nonroot-user-to-your-dev-container
echo "Creating a non-root user with username=$USERNAME uid=$USER_UID gid=$USER_GID."

groupadd --gid $USER_GID $USERNAME
useradd -s $(which zsh) --uid $USER_UID --gid $USER_GID -m $USERNAME
echo $USERNAME ALL=\(root\) NOPASSWD:ALL > /etc/sudoers.d/$USERNAME
chmod 0440 /etc/sudoers.d/$USERNAME

# Clean up
echo "Cleaning up apt."

apt-get autoremove -y
apt-get clean -y
rm -rf /var/lib/apt/lists/*

DEBIAN_FRONTEND=dialog