بناء متعدد المراحل (Multi-stage Builds)

# مرحلة البناء
FROM node:18-alpine AS builder

WORKDIR /app
COPY package*.json ./
RUN npm ci
COPY . .
RUN npm run build

# مرحلة الإنتاج
FROM node:18-alpine

WORKDIR /app
COPY --from=builder /app/dist ./dist
COPY --from=builder /app/package*.json ./
RUN npm ci --only=production

EXPOSE 3000
CMD ["node", "dist/server.js"]

# مرحلة البناء
FROM golang:1.21 AS builder

WORKDIR /app
COPY go.* ./
RUN go mod download
COPY . .
RUN CGO_ENABLED=0 go build -o server .

# مرحلة التشغيل
FROM alpine:3.18

RUN apk --no-cache add ca-certificates
COPY --from=builder /app/server /server

EXPOSE 8080
CMD ["/server"]

# مرحلة بناء الواجهة الأمامية
FROM node:18-alpine AS build

WORKDIR /app
COPY package*.json ./
RUN npm ci
COPY . .
RUN npm run build

# مرحلة Nginx
FROM nginx:alpine

COPY --from=build /app/dist /usr/share/nginx/html
COPY nginx.conf /etc/nginx/conf.d/default.conf

EXPOSE 80
CMD ["nginx", "-g", "daemon off;"]

# مرحلة البناء
FROM python:3.11-slim AS builder

WORKDIR /app
COPY requirements.txt .
RUN pip install --user --no-cache-dir -r requirements.txt

# مرحلة التشغيل
FROM python:3.11-slim

WORKDIR /app
COPY --from=builder /root/.local /root/.local
COPY . .

ENV PATH=/root/.local/bin:$PATH

CMD ["python", "app.py"]

# قبل multi-stage: ~1.2GB
# بعد multi-stage: ~150MB
docker images

jobs:
  build:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - name: بناء الصورة
        run: docker build --target production -t my-app:latest .