added required k8s and docker file

Dockerfile

@@ -0,0 +1,40 @@
+# ── Stage 1: builder ───────────────────────────────────────────────
+FROM node:18-alpine AS builder
+WORKDIR /app
+COPY package.json package-lock.json ./
+COPY prisma ./prisma/
+RUN npm ci --no-audit --no-fund
+RUN npx prisma generate
+
+# ── Stage 2: production ────────────────────────────────────────────
+FROM node:18-alpine AS production
+ENV NODE_ENV=production
+WORKDIR /app
+
+# Non-root user
+RUN addgroup -S appgroup && adduser -S appuser -G appgroup
+
+# Production-only npm dependencies
+COPY package.json package-lock.json ./
+RUN npm ci --omit=dev --no-audit --no-fund
+
+# Copy generated Prisma client from builder
+COPY --from=builder /app/node_modules/.prisma ./node_modules/.prisma
+# Copy prisma CLI so init container can run 'prisma migrate deploy'
+COPY --from=builder /app/node_modules/prisma ./node_modules/prisma
+COPY --from=builder /app/node_modules/.bin/prisma ./node_modules/.bin/prisma
+
+# Copy app source + Prisma schema/migrations
+COPY src ./src
+COPY prisma ./prisma
+
+# Temp uploads dir (emptyDir volume mounted here in k8s)
+RUN mkdir -p uploads
+
+USER appuser
+EXPOSE 3000
+
+HEALTHCHECK --interval=30s --timeout=10s --start-period=60s --retries=3 \
+  CMD wget -qO- http://localhost:3000/health || exit 1
+
+CMD ["node", "src/server.js"]