为什么“Skaffold”为每个 Dockerfile 创建两个图像？

Question

This is my skaffild.yaml file:

apiVersion: skaffold/v2alpha3
kind: Config
deploy:
  kubectl:
    manifests:
      - ./infra/k8s/*
build:
  local:
    push: false
  artifacts:
    - image: tester/auth
      context: auth
      docker:
        dockerfile: Dockerfile
      sync:
        manual:
          - src: 'src/**/*.ts'
            dest: .
    - image: tester/ticketing-client
      context: client
      docker:
        dockerfile: Dockerfile
      sync:
        manual:
          - src: '**/*.js'
            dest: .
    - image: tester/tickets
      context: tickets
      docker:
        dockerfile: Dockerfile
      sync:
        manual:
          - src: 'src/**/*.ts'
            dest: .
    - image: tester/orders
      context: orders
      docker:
        dockerfile: Dockerfile
      sync:
        manual:
          - src: 'src/**/*.ts'
            dest: .

And this is one of the Dockerfile s for example:

FROM node:alpine

WORKDIR /app
COPY package.json .
RUN npm install --only=prod
COPY . .

CMD ["npm", "start"]

I am using Docker-Desktop on Windows 10 locally. When I run skaffold dev command it creates two instance of each image, one with latest tag and the other one with a tag like 66fd1b7d90526513591c1af211f26c9d19d1c7415baac331246219a40a8e6ec0 .

Is it normal? Why does it do that?

Answer 1

It appears that your tagPolicy is set to sha256 , which tags your docker image twice, once with the sha digest :66fd1b... and again with :latest . Bit strange because your skaffold.yaml isn't explicitly setting the tagPolicy and the default is gitCommit .