debian: add debian 12 "bookworm" release

debian/12/Containerfile

@@ -0,0 +1,40 @@
+FROM docker.io/library/debian:12
+
+LABEL com.github.containers.toolbox="true" \
+      name="debian-toolbox" \
+      version="12" \
+      usage="This image is meant to be used with the toolbox command" \
+      summary="Base image for creating Debian toolbox containers" \
+      maintainer=""
+
+# Remove apt configuration optimized for containers
+# Remove docker-gzip-indexes to help with "command-not-found"
+RUN rm /etc/apt/apt.conf.d/docker-gzip-indexes /etc/apt/apt.conf.d/docker-no-languages
+
+# Enable myhostname nss plugin for clean hostname resolution without patching
+# hosts (at least for sudo), add it right after 'files' entry. We expect that
+# this entry is not present yet. Do this early so that package postinst (which
+# adds it too late in the order) skips this step
+RUN sed -Ei 's/^(hosts:.*)(\<files\>)\s*(.*)/\1\2 myhostname \3/' /etc/nsswitch.conf
+
+# Prevent questions when installing packages
+ARG DEBIAN_FRONTEND=noninteractive
+
+# Make flatpak-xdg-utils usable inside the toolbox
+COPY toolbox-flatpak-xdg-utils.sh /etc/profile.d
+
+# Install extra packages as well as libnss-myhostname
+COPY extra-packages /
+RUN apt-get update && \
+    DEBIAN_FRONTEND=noninteractive apt-get -y install \
+        libnss-myhostname \
+        $(cat extra-packages | xargs) && \
+    rm -rd /var/lib/apt/lists/*
+RUN rm /extra-packages
+
+# Enable password less sudo
+RUN sed -i -e 's/ ALL$/ NOPASSWD:ALL/' /etc/sudoers
+
+RUN echo VARIANT_ID=container >> /etc/os-release
+# ?
+RUN touch /etc/localtime

debian/12/extra-packages

@@ -0,0 +1,38 @@
+bash-completion
+bc
+bzip2
+diffutils
+findutils
+flatpak-xdg-utils
+git
+gnupg
+gpgsm
+hostname
+iproute2
+iputils-tracepath
+keyutils
+less
+libcap2-bin
+libkrb5-3
+libnss-mdns
+lsof
+man-db
+manpages
+mtr
+nano
+openssh-client
+passwd
+pigz
+procps
+rsync
+sudo
+tcpdump
+time
+traceroute
+tree
+unzip
+util-linux
+wget
+xauth
+xz-utils
+zip

debian/12/toolbox-flatpak-xdg-utils.sh

@@ -0,0 +1,12 @@
+# shellcheck shell=sh disable=SC2153
+# Add flatpak-xdg-utils to PATH to allow running nested toolbox
+# containers (i.e. uses flatpak-spawn).
+# This also makes the xdg-utils replacements available as part of
+# flatpak-xdg-utils (e.g. xdg-open) usable inside toolbox (requires
+# xdg-desktop-portal on the host side).
+
+if [ -f /run/.containerenv ] && [ -f /run/.toolboxenv ]
+then
+   PATH="/usr/libexec/flatpak-xdg-utils:$PATH"
+   export PATH
+fi