Fix npm install - add --legacy-peer-deps for Astro 6 + tailwind compatibility

Dockerfile

@@ -1,14 +1,14 @@
 FROM node:20-alpine AS builder
 WORKDIR /app
 COPY package*.json ./
-RUN npm install
+RUN npm install --legacy-peer-deps
 COPY . .
 RUN npm run build
 
 FROM node:20-alpine
 WORKDIR /app
 COPY package*.json ./
-RUN npm install
+RUN npm install --legacy-peer-deps
 COPY --from=builder /app/dist ./dist
 COPY --from=builder /app/node_modules ./node_modules