builder: docerk build error: header not found

[cfc4n]

via github action (docker build)

clang \
#18 8.403 		-emit-llvm -O2 -S -D__TARGET_ARCH_x86 -xc -g -isystem -D__BPF_TRACING__ -D__KERNEL__ -DNOCORE -nostdinc -DKBUILD_MODNAME=\"eCapture\" -target x86_64  -Wall -Wno-unused-variable -Wnounused-but-set-variable -Wno-frame-address -Wno-unused-value -Wno-unknown-warning-option -Wno-pragma-once-outside-header -Wno-pointer-sign -Wno-gnu-variable-sized-type-not-at-end -Wno-deprecated-declarations -Wno-compare-distinct-pointer-types -Wno-address-of-packed-member -fno-stack-protector -fno-jump-tables -fno-unwind-tables -fno-asynchronous-unwind-tables \
#18 8.403 		-I ./kern -I ./kern/bpf/x86 \
#18 8.403 		-I /lib/modules/6.8.0-1014-azure/build/arch/x86/include \
#18 8.403 		-I /lib/modules/6.8.0-1014-azure/build/arch/x86/include/generated \
#18 8.403 		-I /lib/modules/6.8.0-1014-azure/build/include \
#18 8.403 		-I /lib/modules/6.8.0-1014-azure/build/arch/x86/include/uapi \
#18 8.403 		-I /lib/modules/6.8.0-1014-azure/build/arch/x86/include/generated/uapi \
#18 8.403 		-I /lib/modules/6.8.0-1014-azure/build/include/uapi \
#18 8.403 		-I /lib/modules/6.8.0-1014-azure/build/include/generated/uapi \
#18 8.403 		-DKERNEL_LESS_5_2 \
#18 8.403 		-c kern/boringssl_a_14_kern.c \
#18 8.403 		-o - |llc \
#18 8.403 		-march=bpf \
#18 8.403 		-filetype=obj \
#18 8.403 		-o user/bytecode/boringssl_a_14_kern_noncore_less52.o
#18 8.431 In file included from kern/boringssl_a_14_kern.c:71:
#18 8.433 In file included from ./kern/boringssl_masterkey.h:15:
#18 8.433 ./kern/ecapture.h:28:10: fatal error: 'linux/kconfig.h' file not found
#18 8.436 #include <linux/kconfig.h>
#18 8.437          ^~~~~~~~~~~~~~~~~
#18 8.450 1 error generated.
#18 8.502 yes
#18 8.502 In file included from kern/boringssl_a_14_kern.c:71:
#18 8.502 In file included from ./kern/boringssl_masterkey.h:15:
#18 8.502 ./kern/ecapture.h:28:10: fatal error: 'linux/kconfig.h' file not found
#18 8.502 #include <linux/kconfig.h>
#18 8.502          ^~~~~~~~~~~~~~~~~
#18 8.514 checking for capable lex... 1 error generated.