Update linuxkit version; Add Host filesystem to hook-docker

build.sh

@@ -40,7 +40,7 @@ declare -g HOOK_LK_CONTAINERS_OCI_BASE="${HOOK_LK_CONTAINERS_OCI_BASE:-"quay.io/
 declare -g SKOPEO_IMAGE="${SKOPEO_IMAGE:-"quay.io/skopeo/stable:v1.17.0"}" # See https://quay.io/repository/skopeo/stable?tab=tags&tag=latest
 
 # See https://github.com/linuxkit/linuxkit/releases
-declare -g -r LINUXKIT_VERSION_DEFAULT="1.5.3" # LinuxKit version to use by default; each flavor can set its own too
+declare -g -r LINUXKIT_VERSION_DEFAULT="${LINUXKIT_VERSION:-"1.6.0"}" # LinuxKit version to use by default; each flavor can set its own too
 
 # Directory to use for storing downloaded artifacts: LinuxKit binary, shellcheck binary, etc.
 declare -g -r CACHE_DIR="${CACHE_DIR:-"cache"}"

linuxkit-templates/hook.template.yaml

@@ -176,6 +176,7 @@ services:
       - /var/run/docker:/var/run
       - /var/run/images:/var/lib/docker
       - /var/run/worker:/worker
+      - /:/host_root
     runtime:
       mkdir:
         - /var/run/images