Ported rest of scripts for use by linux-template-builder

scripts/02_install_groups.sh

@@ -0,0 +1,43 @@
+#!/bin/bash -e
+# vim: set ts=4 sw=4 sts=4 et :
+### 02_install_groups.sh : Install specified additional packages into chroot
+echo "--> Alpine Linux 02_install_groups.sh"
+
+set -e
+if [ "${VERBOSE:-0}" -ge 2 ] || [ "${DEBUG:-0}" -eq 1 ]; then
+    set -x
+fi
+
+if [ -n "$TEMPLATE_FLAVOR" ]; then
+    PKGLISTFILE="${TEMPLATE_CONTENT_DIR}/packages_${TEMPLATE_FLAVOR}.list"
+    if ! [ -r "$PKGLISTFILE" ]; then
+        echo "ERROR: PKGLISTFILE '${PKGLISTFILE}' does not exist!"
+        exit 1
+    fi
+else
+    PKGLISTFILE="${TEMPLATE_CONTENT_DIR}/packages.list"
+fi
+
+# Strip comments, then convert newlines to single spaces
+PKGGROUPS="$(sed '/^ *#/d; s/  *#.*//' "${PKGLISTFILE}" | sed ':a;N;$!ba; s/\n/ /g; s/  */ /g')"
+
+APKTOOLS_CACHE_DIR="${CACHE_DIR}/apk_cache"
+export APKTOOLS_CACHE_DIR
+
+ln -sf ../../var/cache/apk $INSTALLDIR/etc/apk/cache
+
+echo "  --> Enabling main and community repos..."
+su -c "echo 'https://dl-cdn.alpinelinux.org/alpine/v3.18/main' > $INSTALLDIR/etc/apk/repositories"
+su -c "echo 'https://dl-cdn.alpinelinux.org/alpine/v3.18/community' >> $INSTALLDIR/etc/apk/repositories"
+
+echo "  --> Synchronize resolv.conf..."
+cp /etc/resolv.conf "${INSTALL_DIR}/etc/resolv.conf"
+
+echo "  --> Updating installed packages..."
+"${TEMPLATE_CONTENT_DIR}/alpine-chroot" "$INSTALL_DIR" /bin/sh -c \
+    "apk update; apk upgrade"
+
+echo "  --> Installing Alpine Linux package groups..."
+echo "    --> Selected packages: ${PKGGROUPS}"
+"${TEMPLATE_CONTENT_DIR}/alpine-chroot" "$INSTALL_DIR" /bin/sh -c \
+    "apk add ${PKGGROUPS}"