mirror of https://github.com/docker/docs.git
65 lines
1.6 KiB
Markdown
65 lines
1.6 KiB
Markdown
---
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title: Test before push with GitHub Actions
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description: Here's how you can validate an image, before pushing it to a registry
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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. The following workflow implements several steps to achieve
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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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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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- name: Set up QEMU
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uses: docker/setup-qemu-action@v3
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- name: Set up Docker Buildx
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uses: docker/setup-buildx-action@v3
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- name: Login to Docker Hub
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uses: docker/login-action@v3
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with:
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username: ${{ vars.DOCKERHUB_USERNAME }}
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password: ${{ secrets.DOCKERHUB_TOKEN }}
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- name: Build and export to Docker
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uses: docker/build-push-action@v6
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with:
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load: true
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tags: ${{ env.TEST_TAG }}
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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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- name: Build and push
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uses: docker/build-push-action@v6
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with:
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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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> The `linux/amd64` image is only built once in this workflow. The image is
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> built once, and the following steps use the internal cache from the first
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> `Build and push` step. The second `Build and push` step only builds
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> `linux/arm64`.
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