Move the part of mkdebarchive we use to a new file

Since dpkg-scanpackages is already done by fill_offline_repo
inside the container we only need the metadata part of
mkdebarchive. Instead of calling mkdebarchive multiple times
(which may cause side effects), move the part we can execute
outside of a container to a new script.

scripts/mkdebarchive-metadata.sh

+#! /bin/bash
+set -e
+
+#Note: this script is a subset of mkdebarchive.sh. It generates only the metadata and assumes
+#that the package files as well as the corect dirctory structure exist.
+
+echo "mkdebarchive.sh (C) 2012-2014 Mmoebius/ALUG, trilader/ALUG; 2014 Christopher Spinrath/OSAK"
+echo "License: GPLv3 GNU Public License"
+echo "Usage: mkdebarchive-metadata.sh dist-codename dist-version archives-dir architecture_list..."
+
+test $# -ge 4 || { echo "Expecting at least 4 arguments!"; exit 1 }
+
+DIST_CODENAME="$1"
+DIST_VERSION="$2"
+BUILD_DATE="$(LC_ALL=C date -u)"
+echo "Running for Ubuntu $DIST_VERSION ($DIST_CODENAME)..."
+
+ARCHIVES_DIR="$3"
+
+#we have three arguments followed by the architecture list
+shift 3
+
+echo "Prerequisite: Alle .deb-Packete liegen in $ARCHIVES_DIR"
+test -d "$ARCHIVES_DIR" || { echo "FAIL: no '$ARCHIVES_DIR'"; exit 2; }
+cd "$ARCHIVES_DIR"
+
+ARCH_STR=""
+
+for ARCH in $@; do
+
+echo
+echo "Erzeuge './dists/$DIST_CODENAME/lip/binary-$ARCH/Release'"
+mkdir -p "dists/$DIST_CODENAME/lip/binary-$ARCH/"
+cat >dists/$DIST_CODENAME/lip/binary-$ARCH/Release <<EOF
+Archive: $DIST_CODENAME
+Version: $DIST_VERSION
+Component: main
+Origin: Ubuntu
+Label: Ubuntu
+Architecture: $ARCH
+EOF
+
+ARCH_STR="$ARCH_STR $ARCH"
+
+done
+
+echo
+echo "Erzeuge './Release'"
+cat >Release <<EOF
+Origin: Ubuntu
+Label: LIP Ubuntu Extra Packages
+Suite: $DIST_CODENAME
+Version: $DIST_VERSION
+Codename: $DIST_CODENAME
+Date: $BUILD_DATE
+Architectures: $ARCH_STR
+Components: lip
+Description: Ubuntu $DIST_CODENAME $DIST_VERSION
+EOF
+
+#echo
+#echo "Erzeuge einen geeigneten Eintrag für APT in 'sources.list.d/01lip-stick-extra.list'"
+#echo "deb [ trusted=yes ] file:/${PWD#/} $DIST_CODENAME lip" > /etc/apt/sources.list.d/01lip-stick-extra.list 
+
+#echo
+#echo "User: Bitte gleich 'apt-get update' starten. Das sollte das Repository einbinden"
+#echo "In diesem Verzeichnis liegen noch 3 Packages.* -Dateien. Die können gelöscht werden"
+#echo "Ende."
+
+#end;
+