fix prod dockerfile

Dockerfile

@@ -16,9 +16,11 @@ ENV RAILS_ENV="production" \
 # Throw-away build stage to reduce size of final image
 FROM base AS build
 
-# Install packages needed to build gems
+# Install packages needed to build gems and Node.js
 RUN apt-get update -qq && \
-    apt-get install --no-install-recommends -y build-essential git libpq-dev libvips pkg-config
+    apt-get install --no-install-recommends -y build-essential git libpq-dev libvips pkg-config curl && \
+    curl -fsSL https://deb.nodesource.com/setup_20.x | bash - && \
+    apt-get install --no-install-recommends -y nodejs
 
 # Install application gems
 COPY Gemfile Gemfile.lock ./
@@ -32,9 +34,16 @@ RUN --mount=type=bind,target=. \
     rm -rf ~/.bundle/ "${BUNDLE_PATH}"/ruby/*/cache "${BUNDLE_PATH}"/ruby/*/bundler/gems/*/.git && \
     bundle exec bootsnap precompile --gemfile
 
+# Install Node.js packages
+COPY package.json package-lock.json ./
+RUN npm install
+
 # Copy application code
 COPY . .
 
+# Run Vite build
+RUN npx vite build
+
 # Precompile bootsnap code for faster boot times
 RUN bundle exec bootsnap precompile app/ lib/