138 lines
4.1 KiB
Markdown
138 lines
4.1 KiB
Markdown
# Troubleshooting
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* [Cannot push to a registry](#cannot-push-to-a-registry)
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* [BuildKit container logs](#buildkit-container-logs)
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* [With containerd](#with-containerd)
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* [`repository name must be lowercase`](#repository-name-must-be-lowercase)
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## Cannot push to a registry
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While pushing to a registry, you may encounter these kinds of issues:
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* `failed commit on ref "layer-sha256:...": invalid content digest in response: invalid checksum digest format`
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* `failed commit on ref "layer-sha256:...": no response`
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* `failed commit on ref "manifest-sha256:...": unexpected status: 400 Bad Request`
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* `failed commit on ref "manifest-sha256:...": unexpected status: 401 Unauthorized`
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* `unexpected response: 401 Unauthorized`
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These issues are not directly related to this action but are rather linked to
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[Buildx](https://github.com/docker/buildx), [BuildKit](https://github.com/moby/buildkit),
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[containerd](https://github.com/containerd/containerd) or the registry on which
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you're pushing your image. The quality of error message depends on the registry
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and are usually not very informative.
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### BuildKit container logs
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To help you solve this, you have to [enable debugging in the setup-buildx](https://github.com/docker/setup-buildx-action#buildkit-container-logs)
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action step and attach BuildKit container logs to your issue.
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### With containerd
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Next you can test pushing with [containerd action](https://github.com/crazy-max/ghaction-setup-containerd)
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using the following workflow. If it works then open an issue on [BuildKit](https://github.com/moby/buildkit)
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repository.
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```yaml
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name: containerd
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on:
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push:
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jobs:
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containerd:
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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@v4
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-
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name: Set up QEMU
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uses: docker/setup-qemu-action@v3
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-
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name: Set up Docker Buildx
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uses: docker/setup-buildx-action@v3
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with:
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buildkitd-flags: --debug
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-
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name: Set up containerd
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uses: crazy-max/ghaction-setup-containerd@v2
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-
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name: Build Docker image
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uses: docker/build-push-action@v6
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with:
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context: .
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platforms: linux/amd64,linux/arm64
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tags: docker.io/user/app:latest
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outputs: type=oci,dest=/tmp/image.tar
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-
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name: Import image in containerd
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run: |
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sudo ctr i import --base-name docker.io/user/app --digests --all-platforms /tmp/image.tar
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-
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name: Push image with containerd
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run: |
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sudo ctr --debug i push --user "${{ secrets.DOCKER_USERNAME }}:${{ secrets.DOCKER_PASSWORD }}" docker.io/user/app:latest
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```
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## `repository name must be lowercase`
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You may encounter this issue if you're using `github.repository` as a repo slug
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in your tag:
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```
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#6 exporting to image
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#6 exporting layers
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#6 exporting layers 1.2s done
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#6 exporting manifest sha256:b47f7dfb97b89ccd5de553af3c8cd94c4795884cbe5693e93946b1d95a7b1d12 0.0s done
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#6 exporting config sha256:995e93fab8196893192f08a38deea6769dc4d98f86cf705eccc24ec96a3e271c 0.0s done
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#6 ERROR: invalid reference format: repository name must be lowercase
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------
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> exporting to image:
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------
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error: failed to solve: invalid reference format: repository name must be lowercase
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```
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or a cache reference:
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```
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#10 importing cache manifest from ghcr.io/My-Org/repo:main
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#10 ERROR: invalid reference format: repository name must be lowercase
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```
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To fix this issue you can use our [metadata action](https://github.com/docker/metadata-action)
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to generate sanitized tags:
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```yaml
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- name: Docker meta
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id: meta
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uses: docker/metadata-action@v4
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with:
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images: ghcr.io/${{ github.repository }}
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tags: latest
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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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context: .
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push: true
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tags: ${{ steps.meta.outputs.tags }}
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```
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Or a dedicated step to sanitize the slug:
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```yaml
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- name: Sanitize repo slug
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uses: actions/github-script@v6
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id: repo_slug
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with:
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result-encoding: string
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script: return 'ghcr.io/${{ github.repository }}'.toLowerCase()
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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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context: .
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push: true
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tags: ${{ steps.repo_slug.outputs.result }}:latest
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```
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