mirror of https://github.com/docker/docs.git
74 lines
1.7 KiB
Markdown
74 lines
1.7 KiB
Markdown
---
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title: Test before push with GitHub Actions
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keywords: ci, github actions, gha, buildkit, buildx, test
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---
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In some cases, you might want to validate that the image works as expected
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before pushing it.
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The following workflow implements several steps to achieve this:
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1. Build and export the image to Docker
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2. Test your image
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3. Multi-platform build and push the image
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```yaml
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name: ci
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on:
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push:
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branches:
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- "main"
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env:
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TEST_TAG: user/app:test
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LATEST_TAG: user/app:latest
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jobs:
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docker:
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runs-on: ubuntu-latest
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steps:
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-
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name: Checkout
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uses: actions/checkout@v3
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-
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name: Set up QEMU
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uses: docker/setup-qemu-action@v2
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-
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name: Set up Docker Buildx
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uses: docker/setup-buildx-action@v2
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-
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name: Login to Docker Hub
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uses: docker/login-action@v2
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with:
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username: ${{ secrets.DOCKERHUB_USERNAME }}
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password: ${{ secrets.DOCKERHUB_TOKEN }}
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-
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name: Build and export to Docker
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uses: docker/build-push-action@v4
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with:
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context: .
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load: true
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tags: ${{ env.TEST_TAG }}
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-
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name: Test
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run: |
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docker run --rm ${{ env.TEST_TAG }}
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-
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name: Build and push
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uses: docker/build-push-action@v4
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with:
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context: .
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platforms: linux/amd64,linux/arm64
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push: true
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tags: ${{ env.LATEST_TAG }}
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```
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> **Note**
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>
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> This workflow doesn't actually build the `linux/amd64` image twice. The image
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> is built once, and the following steps uses the internal cache for from the
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> first `Build and push` step. The second `Build and push` step only builds
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> `linux/arm64`. |