make-test-chroot

#!/bin/bash

NAME=${1:?"Usage: $0 chroot_name"}
TEST_ROOT="$(dirname $0)/test_chroots"

make_test_root() {
    test -d "$TEST_ROOT" || mkdir -p "$TEST_ROOT"

    test -e "$TEST_ROOT/CACHEDIR.TAG" || cat << EOF > "$TEST_ROOT/CACHEDIR.TAG"
Signature: 8a477f597d28d172789f06886806bc55
# chroots used for testing transilience, can be regenerated with make-test-chroot
EOF
}

do_buster() {
    local name="$1"
    local root="$TEST_ROOT/$name"
    
    make_test_root

    sudo btrfs subvolume create "$root"
    sudo eatmydata debootstrap --variant=minbase --include=python3,dbus,systemd buster "$root"
}

if [ -d "$TEST_ROOT/$NAME" ]
then
    echo "$TEST_ROOT/$NAME already exists" >&2
    exit 1
fi

do_$NAME $NAME