#!/bin/bash


#DIST=debian/bullseye
DIST=ubuntu/jammy

ID=$(echo $DIST|cut -d '/' -f 1)
VERSION_CODENAME=$(echo $DIST|cut -d '/' -f 2)

ID=$(echo $DIST|cut -d '/' -f 1)
VERSION_CODENAME=$(echo $DIST|cut -d '/' -f 2)

case $ID in
    debian) DEB_SRC=http://deb.debian.org/debian
            DEB_SRC_SEC=http://ftp.fr.debian.org/debian/
            DEB_SRC_LIST="
            deb-src $DEB_SRC $VERSION_CODENAME main contrib non-free
            deb-src $DEB_SRC_SEC $VERSION_CODENAME-updates main contrib non-free
            "
            ;;
    ubuntu) DEB_SRC=http://archive.ubuntu.com/ubuntu
            DEB_SRC_SEC=http://security.ubuntu.com/ubuntu/
            DEB_SRC_SEC_NAME= $VERSION_CODENAME-security
            DEB_SRC_LIST="
            deb-src $DEB_SRC $VERSION_CODENAME main restricted universe
            deb-src $DEB_SRC $VERSION_CODENAME-updates main restricted universe
            deb-src $DEB_SRC_SEC $VERSION_CODENAME-security main restricted universe
            "   
            ;;
esac

CACHE=/tmp/vte/$DIST

[ ! -d $CACHE ] && mkdir -p $CACHE

echo "CACHE: $CACHE"

cat << EOF > $CACHE/build.def
Bootstrap: docker
From: $ID:$VERSION_CODENAME

%post
	echo "$DEB_SRC_LIST" >> /etc/apt/sources.list

	cat /etc/apt/sources.list

	export DEBIAN_FRONTEND=noninteractive
    apt-get -y update
    apt-get -y install lsb-release vim

%environment
    export LC_ALL=C

EOF

set -x

export SINGULARITY_CACHEDIR=$CACHE

# (userns not supported by buil !

singularity build -F --fakeroot $CACHE/out.sif $CACHE/build.def

echo "out : $CACHE/out.sif"
echo "singularity exec --fakeroot --writable $CACHE/out.sif /bin/bash"