crictl can import images but slow

alpine/build-rootfs.sh

@@ -1,8 +1,19 @@
 #!/bin/bash
 
+/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 "$ROOTFS/build"
 mount --bind /var/cache/apk "$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"
@@ -11,6 +22,7 @@ mount --bind /run  "$ROOTFS/run"
 cp /usr/bin/qemu-aarch64-static "$ROOTFS/usr/bin/"
 cp /etc/resolv.conf "$ROOTFS/etc/resolv.conf"
 cp /build/crio.tar.gz "$ROOTFS/build/"
+cp /build/registry.tar.gz "$ROOTFS/build/"
 cp -r /build/rootfs/* "$ROOTFS/"
 
 chroot "$ROOTFS" /bin/sh -c "ln -s /var/cache/apk /etc/apk/cache"
@@ -21,6 +33,7 @@ chroot "$ROOTFS" /bin/bash /install-packages.sh || exit 1
 rm "$ROOTFS/install-packages.sh"
 
 umount "$ROOTFS/var/cache/apk"
+umount "$ROOTFS/var/cache/k8s-images"
 umount "$ROOTFS/dev"
 umount "$ROOTFS/proc"
 umount "$ROOTFS/sys"
@@ -28,11 +41,13 @@ umount "$ROOTFS/run"
 
 rm -r "$ROOTFS/build"
 
+/merge-rootfs.sh "/build/rootfs-extra" "$ROOTFS"
+
 ### Begin making full disk image for the device
 echo "=========================== RootFS "$( du -sh "$ROOTFS/" )
 
 IMG=output.img
-SIZE=1024MB
+SIZE=1536MB
 
 dd if=/dev/zero of="$IMG" bs=1 count=0 seek=$SIZE