fix: swap Dockerfile builder stages to allow Vite to resolve vendor CSS

Dockerfile

@@ -1,12 +1,4 @@
-# 1. Node Builder Stage
-FROM node:22-alpine AS node-builder
-WORKDIR /app
-COPY package.json package-lock.json ./
-RUN npm ci
-COPY ./ ./
-RUN npm run build
-
-# 2. Composer Builder Stage
+# 1. Composer Builder Stage
 FROM php:8.4-cli-alpine AS composer-builder
 RUN apk add --no-cache unzip
 COPY --from=composer:2 /usr/bin/composer /usr/bin/composer
@@ -17,6 +9,16 @@ RUN composer install --no-dev --no-scripts --no-autoloader --prefer-dist --ignor
 COPY ./ ./
 RUN composer dump-autoload --optimize --no-dev
 
+# 2. Node Builder Stage
+FROM node:22-alpine AS node-builder
+WORKDIR /app
+COPY package.json package-lock.json ./
+RUN npm ci
+COPY ./ ./
+# Copy vendor from composer-builder because Vite needs to process CSS from packages (e.g. livewire/flux)
+COPY --from=composer-builder /app/vendor ./vendor
+RUN npm run build
+
 # 3. Production Stage
 FROM php:8.4-fpm-alpine
 WORKDIR /var/www/html