frontend docker refactor

frontend/Dockerfile

@@ -1,13 +1,15 @@
-FROM node:22-alpine
+FROM node:22-alpine AS builder
 
-WORKDIR /usr/src/app
+WORKDIR /app
+COPY package*.json tsconfig*.json postcss.config.js tailwind.config.js eslint.config.js vite.config.ts index.html ./
+COPY src ./src
 
-COPY package*.json ./
+RUN apk update && apk upgrade
+RUN npm install
+RUN npm run build
 
-RUN if [ "$NODE_ENV" = "dev" ]; then npm install; else npm install --omit=dev; fi
-
-COPY . .
+FROM caddy:2.10
+COPY Caddyfile /etc/caddy/Caddyfile
+COPY --from=builder /app/dist /srv
 
 EXPOSE 80
-
-CMD npm run $NODE_ENV