standalone sucks, nixpacks sucks

amp.Dockerfile

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+# Install dependencies
+FROM node:22-alpine AS deps
+WORKDIR /app
+COPY package.json yarn.lock* ./
+RUN yarn install --frozen-lockfile
+
+# Build
+FROM node:22-alpine AS builder
+WORKDIR /app
+COPY --from=deps /app/node_modules ./node_modules
+COPY . .
+RUN yarn build
+
+# Production image
+FROM node:22-alpine AS runner
+WORKDIR /app
+
+ENV NODE_ENV=production
+
+# Only copy necessary files
+COPY --from=builder /app/.next ./.next
+COPY --from=builder /app/public ./public
+COPY --from=builder /app/package.json ./package.json
+COPY --from=builder /app/node_modules ./node_modules
+
+EXPOSE 3000
+
+CMD ["yarn", "start"]