chore: initialize repository with deployment baseline

backend/Dockerfile

@@ -0,0 +1,21 @@
+FROM node:22-alpine AS deps
+WORKDIR /app
+COPY package.json package-lock.json* ./
+RUN npm install
+
+FROM node:22-alpine AS build
+WORKDIR /app
+COPY --from=deps /app/node_modules ./node_modules
+COPY . .
+RUN npm run prisma:generate
+RUN npm run build
+
+FROM node:22-alpine AS runtime
+WORKDIR /app
+ENV NODE_ENV=production
+COPY --from=build /app/node_modules ./node_modules
+COPY --from=build /app/dist ./dist
+COPY --from=build /app/prisma ./prisma
+COPY --from=build /app/package.json ./package.json
+EXPOSE 8080
+CMD ["sh", "-c", "npm run prisma:deploy && node dist/index.js"]