Optionally output config

Makefile

@@ -3,17 +3,18 @@ DOCKER := $(shell { command -v podman || command -v docker; })
 .PHONY: all clean distclean
 
 all:
-	$(DOCKER) build --tag zmk --build-arg USER_ID=$(shell id -u) --file Dockerfile .
+	$(DOCKER) build --tag zmk --build-arg USER_ID=$(shell id -u) .
 	$(DOCKER) run --rm -it --name zmk \
         -v $(PWD)/bin:/app/bin:ro \
         -v $(PWD)/build:/app/build \
         -v $(PWD)/build.yaml:/app/build.yaml:ro \
 		-v $(PWD)/config:/app/config:ro \
         -v $(PWD)/firmware:/app/firmware \
+        -e OUTPUT_CONFIG=$(OUTPUT_CONFIG) \
 		zmk
 
 clean:
-	rm -rf firmware/*.uf2 build/[^.]*
+	rm -rf firmware/[^.]* build/[^.]*
 
 distclean:
 	$(DOCKER) image rm zmk docker.io/zmkfirmware/zmk-build-arm:stable

bin/build.sh

@@ -1,6 +1,6 @@
 #!/usr/bin/env bash
 
-config_dir="$(pwd)/config"
+config_dir="${PWD}/config"
 timestamp=$(date -u +"%Y%m%d%H%M%S")
 
 while IFS=$',' read -r board shield; do
@@ -24,8 +24,10 @@ while IFS=$',' read -r board shield; do
         west build -d ${build_dir} -- -DZMK_CONFIG="$config_dir"
     fi
 
-    # # echo -e "${display_name} KConfig\n"
-    # # grep -v -e "^#" -e "^$" ${build_dir}/zephyr/.config | sort
+    if [[ ! -z $OUTPUT_CONFIG ]]; then
+        grep -v -e "^#" -e "^$" ${build_dir}/zephyr/.config | sort > \
+            "firmware/${timestamp}-${artifact_name}.config"
+    fi
 
     cp ${build_dir}/zephyr/zmk.uf2 "firmware/${timestamp}-${artifact_name}.uf2"
 done < <(yq '