fix build issue

vm.Dockerfile

@@ -1,14 +1,10 @@
 FROM golang:1.25-alpine AS bubble-builder
 
 WORKDIR /src
-RUN apk add git && git clone https://github.com/iceBear67/bubble && go mod download && mkdir /build
+RUN apk add git && git clone https://github.com/iceBear67/bubble . && go mod download && mkdir /build
 RUN CGO_ENABLED=0 go build -o /build/daemon . && \
 	 CGO_ENABLED=0 go build -o /build/auth_server ./util/
 
-COPY . .
-
-ARG TARGETOS
-ARG TARGETARCH
 RUN CGO_ENABLED=0 GOOS=$TARGETOS GOARCH=$TARGETARCH \
     go build -o /build/daemon . && \
     CGO_ENABLED=0 GOOS=$TARGETOS GOARCH=$TARGETARCH \
@@ -26,6 +22,8 @@ RUN sed -i "s#_REPO_#$CLOUD_CONFIG_REPO#g" /kitchen/overlay/daemon/update-keys.s
 COPY --from=bubble-builder /build/daemon /bin/bubble
 COPY --from=bubble-builder /build/auth_server /bin/auth-server
 RUN --security=insecure \
+	 --mount=type=bind,from=host-modules,source=/,target=/lib/modules \
     cd /kitchen && rm -f vm.raw && ./build-image.sh
 
-
+FROM scratch AS export
+COPY --from=rootfs-builder /kitchen/vm.raw /vm.raw