在 GitHub Actions 中在作业之间共享构建的镜像

由于每个任务都在自己的运行器中隔离运行，因此您无法在任务之间使用已构建的镜像，除非您使用自托管运行器不过，您可以使用 actions/upload-artifact 和 actions/download-artifact 操作在工作流中的任务之间传递数据。

name: ci

on:
  push:

jobs:
  build:
    runs-on: ubuntu-latest
    steps:
      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v3

      - name: Build and export
        uses: docker/build-push-action@v6
        with:
          tags: myimage:latest
          outputs: type=docker,dest=/tmp/myimage.tar

      - name: Upload artifact
        uses: actions/upload-artifact@v4
        with:
          name: myimage
          path: /tmp/myimage.tar

  use:
    runs-on: ubuntu-latest
    needs: build
    steps:
      - name: Download artifact
        uses: actions/download-artifact@v4
        with:
          name: myimage
          path: /tmp

      - name: Load image
        run: |
          docker load --input /tmp/myimage.tar
          docker image ls -a