Switch to ASK's kernel

docker/itb.Dockerfile

@@ -1,7 +1,5 @@
 ARG TAG=dev
 ARG DOCKER_IMAGE_ROOT=monok8s
-FROM ${DOCKER_IMAGE_ROOT}/kernel-build:${TAG} AS kernel
-FROM ${DOCKER_IMAGE_ROOT}/fit-build:${TAG} AS fit
 
 FROM --platform=$BUILDPLATFORM ${DOCKER_IMAGE_ROOT}/build-base:${TAG} AS build
 
@@ -11,8 +9,6 @@ RUN mkdir /image
 WORKDIR /image
 
 COPY [ "./out/Image.gz" \
-	, "./out/System.map" \
-	, "./out/.config" \
 	, "./out/initramfs.cpio.gz" \
 	, "./out/${DEVICE_TREE_TARGET}.dtb", "./" ]