name: Docker Image CI

on:
  push:
    branches:
      - main

jobs:
  build:
    runs-on: ubuntu-latest

    steps:
    - name: Checkout code
      uses: actions/checkout@v4

    - name: Wait for and verify Docker-in-Docker (DIND) connection
      run: |
        echo "Waiting for Docker daemon to be ready..."
        while ! docker info > /dev/null 2>&1; do
          echo -n "."
          sleep 1
        done
        echo "\nDocker daemon is ready!"
        docker info

    # 设置 Docker Buildx
    # 使用 driver: docker 以复用现有的 Docker 守护进程，避免在 Rootless 环境下挂载 socket 失败
    - name: Set up Docker Buildx
      uses: docker/setup-buildx-action@v3
      with:
        driver: docker

    # 登录 Gitea 容器镜像库
    - name: Log in to Gitea Container Registry
      uses: docker/login-action@v3
      with:
        # 您的 Gitea 实例地址，请在 Gitea 仓库的 Secrets 中设置 GITEA_REGISTRY_URL
        registry: ${{ secrets.GITEA_REGISTRY_URL }}
        username: ${{ gitea.actor }}
        # 请在 Gitea 仓库的 Secrets 中创建一个具有包读写权限的 GITEA_TOKEN
        password: ${{ secrets.GITEA_TOKEN }}

    # 构建并推送 Docker 镜像
    - name: Build and push Docker image
      run: |
        # 镜像名格式为：<Gitea 实例地址>/<所有者>/<仓库名>
        IMAGE_NAME="${{ secrets.GITEA_REGISTRY_URL }}/${{ gitea.repository_owner }}/my-docs"
        echo "Pushing to: $IMAGE_NAME"
        docker build . --file Dockerfile \
          --tag "$IMAGE_NAME:latest" \
          --tag "$IMAGE_NAME:${{ gitea.sha }}"
        docker push "$IMAGE_NAME:latest"
        docker push "$IMAGE_NAME:${{ gitea.sha }}"