+# install all apt related files
+fcopy -i -B -v -r /etc/apt
+
+# install packages from a repository of a specific date
+if [ -n "${WAYBACK_DATE:-}" ] ; then
+ echo "Wayback date '$WAYBACK_DATE' identified, enabling for snapshot.debian.org usage."
+
+ perl -pi -e "s#^(\s+)(deb.* )(.*://ftp.debian.org.*?)\s+([a-z-]+)\s+(.*)\$#\$1\$2 [check-valid-until=no] http://snapshot.debian.org/archive/debian/$WAYBACK_DATE/ \$4 \$5#" \
+ "${target}/etc/apt/sources.list.d/debian.list"
+
+ perl -pi -e "s#^(\s+)(deb.* )(.*://security.debian.org.*?)\s+([a-z-/]+)\s+(.*)\$#\$1\$2 [check-valid-until=no] http://snapshot.debian.org/archive/debian-security/$WAYBACK_DATE/ \$4 \$5#" \
+ "${target}/etc/apt/sources.list.d/debian.list"
+fi