Add lua minifier

Dockerfile

@@ -1,6 +1,6 @@
 FROM archlinux:base-devel AS builder
 
-RUN pacman -Syu npm luarocks just --noconfirm
+RUN pacman -Syu npm lua luarocks just --noconfirm
 
 # build frontend
 WORKDIR /frontend
@@ -11,6 +11,7 @@ RUN npm install && npm run build
 WORKDIR /lua
 COPY lua .
 RUN luarocks install tl && \
+    luarocks install dumbluaparser && \
     eval $(luarocks path) && \
     just build