add tree to reqts

hjwp · hjwp · commit 8c870bcc7119 · 2024-05-20T18:02:03.000+01:00
diff --git a/Makefile b/Makefile
@@ -52,7 +52,7 @@ build: $(HTML_PAGES) $(TMPDIR)
 
 .PHONY: install
 install: .venv/bin
-	which brew && brew install asciidoctor || apt install -y asciidoctor
+	which brew && brew install asciidoctor tree || apt install -y asciidoctor tree
 
 .PHONY: update-submodules
 update-submodules:
