How to use github action auto push docker image to docker hub

Docker Hub is a cloud-based registry service for Docker containers. It provides a platform for Docker users to share and distribute container images.

• 1、You should register a user on docker hub, and next to do.
• 2、create your docker hub repositories on docker hub
• 3、 add workflow file in your github project.
  name: Build

on:
  push:
    branches: [ main ]
    paths-ignore:
      - .github/**
      - docs/**
  pull_request:
    branches: [ main ]

env:
  IMAGE_NAME: registry.ap-southeast-1.aliyuncs.com/kuops/easy-admin # docker image
  TAG: ${{ secrets.IMAGE_NAME_TAG }}
  IMAGE_NAME_TAG: registry.ap-southeast-1.aliyuncs.com/kuops/easy-admin:${{ secrets.IMAGE_NAME_TAG }}

jobs:
  sync:
    name: 'Submodules Sync'
    runs-on: ubuntu-latest
    steps:
      - name: check submodules
        uses: actions/checkout@v4
        with:
          submodules: true
      # Update references
      - name: Git Sumbodule Update
        run: |
          git submodule update --remote --recursive
      - name: ls dir
        run: ls -la
      - name: cd ui
        run: cd ./ui/ && ls -la

  build:
    runs-on: ubuntu-latest
    strategy:
      matrix:
        go-version: ['1.21']
    steps:
      - uses: actions/checkout@v4
        with:
          submodules: true
      - uses: actions/setup-node@v3
        with:
          node-version: 16
      - name: Git Sumbodule Update
        run: |
          git submodule update --remote --recursive

      - name: npm install
        run: cd ./ui/ && npm install --legacy-peer-deps
      
      - name : npm build
        run: cd ./ui/ && npm run build:prod --legacy-peer-deps
      
      - name: Set up Go ${{ matrix.go-version }}
        uses: actions/setup-go@v4
        with:
          go-version: ${{ matrix.go-version }}

     # - name: go Test
     #   run: go test

      - name: Tidy
        run: go mod tidy

      - name: Build
        run: CGO_ENABLED=0 go build -ldflags="$(LDFLAGS)" -a -installsuffix "" -o easy-admin .

      - name: Build the Docker image and push
        run: |
          docker login --username=${{ secrets.DOCKER_USERNAME }} registry.ap-southeast-1.aliyuncs.com --password=${{ secrets.DOCKER_PASSWORD }}
          echo "************ docker login end"
          docker build -t easy-admin:latest .
          echo "************ docker build end"
          docker tag easy-admin ${{ env.IMAGE_NAME_TAG }}
          echo "************ docker tag end"
          docker images
          echo "************ docker images end"
          docker push ${{ env.IMAGE_NAME_TAG }}  # 推送
          echo "************ docker push end"
          
      - name: Log in to Docker Hub
        uses: docker/login-action@f4ef78c080cd8ba55a85445d5b36e214a81df20a
        with:
          username: ${{ secrets.HUB_DOCKER_USERNAME }}
          password: ${{ secrets.HUB_DOCKER_PASSWORD }}
      
      - name: Extract metadata (tags, labels) for Docker
        id: meta
        uses: docker/metadata-action@9ec57ed1fcdbf14dcef7dfbe97b2010124a938b7
        with:
          images: nicesteven/easy-admin
      
      - name: Build and push Docker image
        uses: docker/build-push-action@3b5e8027fcad23fda98b2e3ac259d8d67585f671
        with:
          context: .
          file: ./Dockerfile
          push: true
          tags: nicesteven/easy-admin:latest

• 4、configure your hub account and docker hub token, you can click this link to create your docker hub https://hub.docker.com/settings/security
• 5、Add your docker hub account in your github project
• 6、make your Dockerfile for your project, when you push the docker image before you must have docker image content

FROM alpine

RUN apk update --no-cache
RUN apk add --update gcc g++ libc6-compat
RUN apk add --no-cache ca-certificates
RUN apk add --no-cache tzdata
RUN apk add --no-cache tini
ENV TZ Asia/Shanghai

COPY ./easy-admin  /easy-admin
COPY ./config/settings.demo.yml /config/settings.yml
EXPOSE 8000
RUN  chmod +x /easy-admin

ENTRYPOINT ["/sbin/tini", "--"]

CMD ["/easy-admin","server","-c", "/config/settings.yml"]

• 7、and then when you push your code, the github action will auto make docker image and push to docker hub

This article all code form https://github.com/nicelizhi/easy-admin, you can git clone do it.
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