Initial commit: Spark Platform with Cartesian SEO Engine

frontend/Dockerfile

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+# ========= BASE =========
+FROM node:20-alpine AS base
+WORKDIR /app
+
+# ========= DEPENDENCIES =========
+FROM base AS deps
+COPY package.json package-lock.json* ./
+RUN npm ci
+
+# ========= BUILD =========
+FROM base AS builder
+COPY --from=deps /app/node_modules ./node_modules
+COPY . .
+RUN npm run build
+
+# ========= RUNNER =========
+FROM base AS runner
+ENV NODE_ENV=production
+ENV HOST=0.0.0.0
+ENV PORT=4321
+
+WORKDIR /app
+COPY --from=builder /app/dist ./dist
+COPY --from=builder /app/node_modules ./node_modules
+COPY package.json .
+
+EXPOSE 4321
+CMD ["node", "./dist/server/entry.mjs"]