# Using Vercel CLI
vercel env add NEXT_PUBLIC_CLERK_PUBLISHABLE_KEY production
vercel env add CLERK_SECRET_KEY production
vercel env add CLERK_WEBHOOK_SECRET production

# Or in vercel.json

// vercel.json
{
  "env": {
    "NEXT_PUBLIC_CLERK_PUBLISHABLE_KEY": "@clerk-publishable-key",
    "CLERK_SECRET_KEY": "@clerk-secret-key"
  },
  "headers": [
    {
      "source": "/(.*)",
      "headers": [
        { "key": "X-Frame-Options", "value": "DENY" },
        { "key": "X-Content-Type-Options", "value": "nosniff" }
      ]
    }
  ]
}

# Deploy to production
vercel --prod

# Or link to Git for auto-deploy
vercel link

# netlify.toml
[build]
  command = "npm run build"
  publish = ".next"

[build.environment]
  NEXT_PUBLIC_CLERK_PUBLISHABLE_KEY = "pk_live_..."

# Add secret in Netlify Dashboard
# Site settings > Environment variables > CLERK_SECRET_KEY

// netlify/functions/clerk-webhook.ts
import { Handler } from '@netlify/functions'
import { Webhook } from 'svix'

export const handler: Handler = async (event) => {
  const WEBHOOK_SECRET = process.env.CLERK_WEBHOOK_SECRET!

  const svix_id = event.headers['svix-id']
  const svix_timestamp = event.headers['svix-timestamp']
  const svix_signature = event.headers['svix-signature']

  const wh = new Webhook(WEBHOOK_SECRET)

  try {
    const evt = wh.verify(event.body!, {
      'svix-id': svix_id!,
      'svix-timestamp': svix_timestamp!,
      'svix-signature': svix_signature!
    })

    // Process event
    return { statusCode: 200, body: JSON.stringify({ success: true }) }
  } catch (err) {
    return { statusCode: 400, body: 'Invalid signature' }
  }
}

# railway.json
{
  "build": {
    "builder": "NIXPACKS"
  },
  "deploy": {
    "startCommand": "npm start",
    "healthcheckPath": "/api/health"
  }
}

# Using Railway CLI
railway variables set NEXT_PUBLIC_CLERK_PUBLISHABLE_KEY=pk_live_...
railway variables set CLERK_SECRET_KEY=sk_live_...
railway variables set CLERK_WEBHOOK_SECRET=whsec_...

FROM node:20-alpine AS builder

WORKDIR /app

COPY package*.json ./
RUN npm ci

COPY . .

# Build-time args for NEXT_PUBLIC_ vars
ARG NEXT_PUBLIC_CLERK_PUBLISHABLE_KEY
ENV NEXT_PUBLIC_CLERK_PUBLISHABLE_KEY=$NEXT_PUBLIC_CLERK_PUBLISHABLE_KEY

RUN npm run build

FROM node:20-alpine AS runner

WORKDIR /app

ENV NODE_ENV=production

COPY --from=builder /app/.next/standalone ./
COPY --from=builder /app/.next/static ./.next/static
COPY --from=builder /app/public ./public

# Runtime env vars
ENV CLERK_SECRET_KEY=""
ENV PORT=3000

EXPOSE 3000

CMD ["node", "server.js"]

# Build and run
docker build \
  --build-arg NEXT_PUBLIC_CLERK_PUBLISHABLE_KEY=pk_live_... \
  -t myapp .

docker run -p 3000:3000 \
  -e CLERK_SECRET_KEY=sk_live_... \
  myapp

# amplify.yml
version: 1
frontend:
  phases:
    preBuild:
      commands:
        - npm ci
    build:
      commands:
        - npm run build
  artifacts:
    baseDirectory: .next
    files:
      - '**/*'
  cache:
    paths:
      - node_modules/**/*