Deployment

---
name: Deployment
description: Deploy applications ไปยังทุก platform อย่างมืออาชีพ
---

# Deployment Skill

## Overview

Skill สำหรับ deploy applications ตั้งแต่ containerization จนถึง production deployment

## Docker Containerization

### Frontend Dockerfile (Next.js/React/Vue)

```dockerfile
# Build stage
FROM node:20-alpine AS builder
WORKDIR /app
COPY package*.json ./
RUN npm ci
COPY . .
RUN npm run build

# Production stage
FROM node:20-alpine AS runner
WORKDIR /app
ENV NODE_ENV=production

COPY --from=builder /app/package*.json ./
COPY --from=builder /app/.next ./.next
COPY --from=builder /app/public ./public
COPY --from=builder /app/node_modules ./node_modules

EXPOSE 3000
CMD ["npm", "start"]
```

### Angular Dockerfile

```dockerfile
# Build stage
FROM node:20-alpine AS builder
WORKDIR /app
COPY package*.json ./
RUN npm ci
COPY . .
RUN npm run build -- --configuration=production

# Production stage
FROM nginx:alpine
COPY --from=builder /app/dist/*/browser /usr/share/nginx/html
COPY nginx.conf /etc/nginx/nginx.conf
EXPOSE 80
CMD ["nginx", "-g", "daemon off;"]
```

### Spring Boot Dockerfile

```dockerfile
# Build stage
FROM eclipse-temurin:21-jdk-alpine AS builder
WORKDIR /app
COPY mvnw pom.xml ./
COPY .mvn .mvn
RUN ./mvnw dependency:go-offline
COPY src ./src
RUN ./mvnw package -DskipTests

# Production stage
FROM eclipse-temurin:21-jre-alpine
WORKDIR /app
COPY --from=builder /app/target/*.jar app.jar
EXPOSE 8080
ENTRYPOINT ["java", "-jar", "app.jar"]
```

### Node.js Dockerfile

```dockerfile
FROM node:20-alpine
WORKDIR /app
COPY package*.json ./
RUN npm ci --only=production
COPY dist ./dist
EXPOSE 3000
CMD ["node", "dist/index.js"]
```

### Python FastAPI Dockerfile

```dockerfile
FROM python:3.12-slim
WORKDIR /app
COPY requirements.txt .
RUN pip install --no-cache-dir -r requirements.txt
COPY app ./app
EXPOSE 8000
CMD ["uvicorn", "app.main:app", "--host", "0.0.0.0", "--port", "8000"]
```

---

## Docker Compose

### Development Environment

```yaml
version: "3.8"

services:
  frontend:
    build: ./frontend
    ports:
      - "3000:3000"
    volumes:
      - ./frontend:/app
      - /app/node_modules
    environment:
      - NEXT_PUBLIC_API_URL=http://localhost:8080
    depends_on:
      - backend

  backend:
    build: ./backend
    ports:
      - "8080:8080"
    environment:
      - DATABASE_URL=postgresql://user:pass@db:5432/mydb
      - JWT_SECRET=dev-secret
    depends_on:
      - db

  db:
    image: postgres:16-alpine
    ports:
      - "5432:5432"
    environment:
      - POSTGRES_USER=user
      - POSTGRES_PASSWORD=pass
      - POSTGRES_DB=mydb
    volumes:
      - postgres_data:/var/lib/postgresql/data

volumes:
  postgres_data:
```

---

## Kubernetes Deployment

### Namespace

```yaml
apiVersion: v1
kind: Namespace
metadata:
  name: myapp
```

### Deployment

```yaml
apiVersion: apps/v1
kind: Deployment
metadata:
  name: backend
  namespace: myapp
spec:
  replicas: 3
  selector:
    matchLabels:
      app: backend
  template:
    metadata:
      labels:
        app: backend
    spec:
      containers:
        - name: backend
          image: myregistry/backend:latest
          ports:
            - containerPort: 8080
          env:
            - name: DATABASE_URL
              valueFrom:
                secretKeyRef:
                  name: db-secret
                  key: url
          resources:
            requests:
              memory: "256Mi"
              cpu: "250m"
            limits:
              memory: "512Mi"
              cpu: "500m"
          livenessProbe:
            httpGet:
              path: /health
              port: 8080
            initialDelaySeconds: 30
            periodSeconds: 10
          readinessProbe:
            httpGet:
              path: /ready
              port: 8080
            initialDelaySeconds: 5
            periodSeconds: 5
```

### Service

```yaml
apiVersion: v1
kind: Service
metadata:
  name: backend
  namespace: myapp
spec:
  selector:
    app: backend
  ports:
    - port: 80
      targetPort: 8080
  type: ClusterIP
```

### Ingress

```yaml
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: myapp-ingress
  namespace: myapp
  annotations:
    kubernetes.io/ingress.class: nginx
    cert-manager.io/cluster-issuer: letsencrypt-prod
spec:
  tls:
    - hosts:
        - api.myapp.com
      secretName: myapp-tls
  rules:
    - host: api.myapp.com
      http:
        paths:
          - path: /
            pathType: Prefix
            backend:
              service:
                name: backend
                port:
                  number: 80
```

---

## CI/CD Pipeline

### GitHub Actions

```yaml
name: CI/CD

on:
  push:
    branches: [main]
  pull_request:
    branches: [main]

jobs:
  test:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - uses: actions/setup-node@v4
        with:
          node-version: "20"
      - run: npm ci
      - run: npm test
      - run: npm run lint

  build-and-push:
    needs: test
    runs-on: ubuntu-latest
    if: github.ref == 'refs/heads/main'
    steps:
      - uses: actions/checkout@v4

      - name: Login to Docker Hub
        uses: docker/login-action@v3
        with:
          username: ${{ secrets.DOCKER_USERNAME }}
          password: ${{ secrets.DOCKER_TOKEN }}

      - name: Build and push
        uses: docker/build-push-action@v5
        with:
          push: true
          tags: myregistry/myapp:${{ github.sha }}

  deploy:
    needs: build-and-push
    runs-on: ubuntu-latest
    steps:
      - name: Deploy to Kubernetes
        run: |
          kubectl set image deployment/backend \
            backend=myregistry/myapp:${{ github.sha }}
```

---

## Deployment Checklist

### Pre-deployment

- [ ] Tests ผ่านหมด
- [ ] Build สำเร็จ
- [ ] Environment variables ถูกต้อง
- [ ] Database migrations พร้อม
- [ ] Secrets ถูก configure

### Deployment

- [ ] Create/Update Docker images
- [ ] Push to container registry
- [ ] Update Kubernetes manifests
- [ ] Apply to cluster
- [ ] Verify pods running

### Post-deployment

- [ ] Smoke test endpoints
- [ ] ตรวจสอบ logs
- [ ] Monitor metrics
- [ ] Verify health checks
- [ ] Rollback plan พร้อม