initramfs: use default tmpfs size for root

set default repositories

initramfs-init

@@ -133,7 +133,7 @@ ebegin "Loading hardware drivers"
 scan_drivers
 eend 0
 
-mount -t tmpfs -o size=50M tmpfs $NEWROOT
+mount -t tmpfs tmpfs $NEWROOT
 
 # look for apkovl
 for i in usb floppy cdrom; do
@@ -161,6 +161,11 @@ eend $?
 cp /media/$ALPINE_DEV/.alpine-release $NEWROOT/
 ln -sf /.alpine-release $NEWROOT/etc/alpine-release
 
+# if there is no repositories file, then use the default
+if ! [ -f $NEWROOT/etc/apk/repositories ]; then
+	echo /media/$ALPINE_DEV/apks > $NEWROOT/etc/apk/repositories
+fi
+
 # switch over to new root
 cat /proc/mounts | while read DEV DIR TYPE OPTS ; do
 	if [ "$DIR" != "/" -a "$DIR" != "$NEWROOT" -a -d "$DIR" ]; then