refactor: use bubble instead

image/Makefile

@@ -15,10 +15,6 @@ CONFIGURE_SH   = $(SCRIPT_DIR)/configure.sh
 
 build:
 	@echo ">>> Building $(IMAGE_FILE) ..."
-	@test -f $(OVERLAY_DIR)/root/gpg-key.asc || { \
-		echo "ERROR: GPG key not found. Generate key first" >&2; \
-		exit 1; \
-	}
 	alpine-make-vm-image \
 		--branch         $(ALPINE_BRANCH) \
 		--image-format   $(IMAGE_FORMAT) \
@@ -28,7 +24,7 @@ build:
 		--fs-skel-dir    $(OVERLAY_DIR) \
 		--fs-skel-chown  root:root \
 		--script-chroot \
-		--packages       "python3 py3-yaml py3-pydantic git curl gnupg docker docker-cli-buildx docker-cli-compose cronie" \
+		--packages       "git curl docker docker-cli-buildx docker-cli-compose cronie" \
 		$(IMAGE_FILE) \
 		$(CONFIGURE_SH)
 	@echo ">>> Image built: $(IMAGE_FILE)"