带curl命令的最小镜像

关键字
alpine、scratch、curl、镜像、最小

1、Dockerfile如下

FROM alpine:latest
RUN apk add --update curl && rm -rf /var/cache/apk/*

2、pods文件例子

apiVersion: apps/v1
kind: Deployment
metadata:
  name: ddtest-group-deploy
  labels:
    app: ddtest-group
spec:
  replicas: 3
  selector:
    matchLabels:
      app: ddtest-group
  template:
    metadata:
      labels:
        app: ddtest-group
    spec:
      initContainers:
      - image: your-image-url:tag
        name: ddtest-go
        command: ["cp", "/ddtest", "/app"]
        volumeMounts:
        - mountPath: /app
          name: app-volume
      containers:
      - image: your-image-url:tag
        name: nginx-go
        command: ["/app/ddtest"]
        volumeMounts:
        - mountPath: /app
          name: app-volume
        ports:
        - containerPort: 8080
      volumes:
      - name: app-volume
        emptyDir: {}