diff --git a/Makefile b/Makefile
index 12a52dec..6dda22f0 100644
--- a/Makefile
+++ b/Makefile
@@ -1,21 +1,25 @@
-# .PHONY: reformat
-# reformat:
-# 	find \
-# 		./firmware-demo/src/ \
-# 		./lib/lilka \
-# 		-not \( -name .ccls-cache -prune \) \
-# 		-not \( -name .pio -prune \) \
-# 		-iname *.h \
-# 		-o -iname *.cpp \
-# 		| xargs clang-format -i
+help: ## Show this help
+	@grep -E '^[a-zA-Z_-]+:.*?## .*$$' $(MAKEFILE_LIST) | awk 'BEGIN {FS = ":.*?## "}; {printf "\033[36m%-16s\033[0m %s\n", $$1, $$2}'
 
-all:
-	false
+.PHONY: reformat
+reformat: ## Reformat all source files
+	@find \
+		. \
+		-not \( -name .ccls-cache -prune \) \
+		-not \( -name .pio -prune \) \
+		-not \( -name mjs -prune \) \
+		-not \( -name doomgeneric -prune \) \
+		-not \( -name bak -prune \) \
+		-iname *.h \
+		-o -iname *.cpp \
+		-o -iname *.c \
+		-o -iname *.hpp \
+		-o -iname *.h \
+		-o -iname *.rst \
+		| xargs clang-format -i
 
 .PHONY: todo
-todo:
-	@# Find all files, but exclude .pio and .ccls-cache directories
-	@# Preserve colors in output
+todo: ## Find all TODO, FIXME, XXX comments
 	@find \
 		. \
 		-not \( -name .ccls-cache -prune \) \
@@ -32,12 +36,19 @@ todo:
 		| xargs grep --color=always -n -H -E "TODO|FIXME|XXX" \
 
 .PHONY: check
-check: clang-format cppcheck
+check: clang-format cppcheck ## Run all checks
+
+.ONESHELL: check-docker
+check-docker: ## Run all checks in docker
+	docker build -t lilka-check -f - . <<EOF
+		FROM ubuntu:24.04
+		RUN apt-get update -y && \
+		apt-get install -y clang-format cppcheck findutils grep make
+	EOF
+	docker run --rm -it -v $(PWD):/lilka -w /lilka lilka-check make check
 
 .PHONY: clang-format
-clang-format:
-	# Find all files, but exclude .pio and .ccls-cache directories
-	# Preserve colors in output
+clang-format: ## Run clang-format check
 	find \
 		. \
 		-not \( -name .ccls-cache -prune \) \
@@ -53,7 +64,7 @@ clang-format:
 		| xargs clang-format --dry-run --Werror
 
 .PHONY: cppcheck
-cppcheck:
+cppcheck: ## Run cppcheck check
 	cppcheck . -i.ccls-cache -ipio -imjs -idoomgeneric -ibak --enable=performance,style \
 		--suppress=cstyleCast \
 		--suppress=constVariablePointer \
diff --git a/firmware/keira/src/apps/statusbar.cpp b/firmware/keira/src/apps/statusbar.cpp
index b36ca77d..3f9d2075 100644
--- a/firmware/keira/src/apps/statusbar.cpp
+++ b/firmware/keira/src/apps/statusbar.cpp
@@ -44,14 +44,14 @@ void StatusBarApp::run() {
         xOffset += 8 + 24;
 
         // Draw battery
-        int16_t x1 = 6, y1 = 8;
-        int16_t fullWidth = 22, h = 8;
         int level = lilka::battery.readLevel();
         if (level == -1) {
             canvas->draw16bitRGBBitmapWithTranColor(
                 xOffset, 0, battery_absent, lilka::display.color565(255, 0, 255), 32, 24
             );
         } else {
+            int16_t x1 = 6, y1 = 8;
+            int16_t fullWidth = 22, h = 8;
             int filledWidth = fullWidth * level / 100;
             if (filledWidth < 1) filledWidth = 1;
             int16_t color =