Remove unused /var/lib/registry data

alpine/build-rootfs.sh

@@ -4,20 +4,11 @@ set -euo pipefail
 
 /preload-k8s-images.sh || exit 1
 
-REGISTRY_DATA_DIR="${KUBE_IMG_CACHE}/registry-data/${ARCH}/${KUBE_VERSION}"
-
-mkdir -p "${ROOTFS}/var/lib/registry"
-
-echo "Copying registry data into rootfs..."
-cp -a "${REGISTRY_DATA_DIR}/." "${ROOTFS}/var/lib/registry/"
-
 mkdir -p "$ROOTFS/var/cache/apk"
-mkdir -p "$ROOTFS/var/cache/k8s-images"
 mkdir -p "$ROOTFS/opt/monok8s/config"
 mkdir -p "$ROOTFS/build"
 
 mount --bind /var/cache/apk "$ROOTFS/var/cache/apk"
-mount --bind /var/cache/k8s-images "$ROOTFS/var/cache/k8s-images"
 mount --bind /dev  "$ROOTFS/dev"
 mount --bind /proc "$ROOTFS/proc"
 mount --bind /sys  "$ROOTFS/sys"
@@ -42,7 +33,6 @@ chroot "$ROOTFS" /bin/bash /configure-system.sh || exit 1
 rm "$ROOTFS/configure-system.sh"
 
 umount "$ROOTFS/var/cache/apk"
-umount "$ROOTFS/var/cache/k8s-images"
 umount "$ROOTFS/dev"
 umount "$ROOTFS/proc"
 umount "$ROOTFS/sys"
@@ -60,8 +50,8 @@ dd if=/dev/zero of="$IMG" bs=1 count=0 seek=$SIZE
 
 sgdisk -o "$IMG" \
   -n 1:2048:+64M  -t 1:0700 -c 1:config \
-  -n 2:0:+3G      -t 2:8300 -c 2:rootfsA \
-  -n 3:0:+3G      -t 3:8300 -c 3:rootfsB \
+  -n 2:0:+2G      -t 2:8300 -c 2:rootfsA \
+  -n 3:0:+2G      -t 3:8300 -c 3:rootfsB \
   -n 4:0:0        -t 4:8300 -c 4:data
 
 losetup -D
@@ -75,11 +65,18 @@ mkfs.ext4 -F "${TMP_LOOP}p2"
 mkfs.ext4 -F "${TMP_LOOP}p3"
 mkfs.ext4 -F "${TMP_LOOP}p4"
 
-mkdir -p /mnt/img-root
+mkdir -p /mnt/img-root /mnt/data
 
 mount "${TMP_LOOP}p2" /mnt/img-root
+mount "${TMP_LOOP}p4" /mnt/data
 
+# Put the real /var onto the data partition
+cp -a "$ROOTFS/var" /mnt/data/
+
+# Copy rootfs to root partition, but exclude /var
 cp -a "$ROOTFS"/. /mnt/img-root/
+rm -rf /mnt/img-root/var
+mkdir -p /mnt/img-root/var
 
 mkdir -p /mnt/img-root/boot
 cp /build/Image.gz /mnt/img-root/boot/Image.gz
@@ -88,6 +85,7 @@ cp /build/${DEVICE_TREE_TARGET}.dtb /mnt/img-root/boot/${DEVICE_TREE_TARGET}.dtb
 
 sync
 umount /mnt/img-root
+umount /mnt/data
 
 losetup -d "$LOOP"