Experiencing unknown blob error on push

[gudleik]

I have a workflow containing multiple jobs building and pushing images to Github Packages.
This works great most of the time, but sometimes a random job is failing during docker push with an unknown blob error.

The jobs are declared like this:

  build-maintenance:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v2
      - uses: docker/build-push-action@v1
        with:
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}
          registry: docker.pkg.github.com
          repository: XXX/YYY/maintenance
          path: maintenance
          target: production
          tag_with_sha: true

Tail of job output:

Successfully built c6ac9d5faeba
Successfully tagged docker.pkg.github.com/XXX/YYY/maintenance:sha-eac817d
Pushing image [docker.pkg.github.com/XXX/YYY/maintenance:sha-eac817d]
The push refers to repository [docker.pkg.github.com/XXX/YYY/maintenance]
1e64616ff473: Preparing
02e9da9d44c5: Preparing
3810cc0c140f: Preparing
3e207b409db3: Preparing
3e207b409db3: Layer already exists
3810cc0c140f: Layer already exists
unknown blob
Error: exit status 1
exit status 1
Usage:
  github-actions build-push [flags]

Flags:
  -h, --help   help for build-push

[prise6]

Any news on this ?
Got same issue. I wonder if this linked to limited free space for public projet ?

[gudleik]

I tried building and pushing without using this package, and experienced same errors.
When I changed from using short prefixed sha (sha-abcdefg) to full sha as image tags, the problem disappeared.

Maybe you can make tagging a little more customizable, like

# use full sha
uses: docker/build-push-action@v1
with:
  tag: ${{GITHUB_SHA}}

# prefixed short sha like today
uses: docker/build-push-action@v1
with:
  tag: sha-${{GITHUB_SHA::7}}

[leoschweizer]

Seeing this error as well all of a sudden - but I'm not using sha tags at all, it is just the latest tag which it has always been 🤔

[derTobsch]

@leoschweizer same here. We also use the latest tag see https://github.com/synyx/urlaubsverwaltung/runs/679001614#step:6:26

[RichiCoder1]

ditto. Seeing this pretty consistently.

[wujood]

I have the same issue, but it seems that if you retry it a couple of times it sometimes works. This seems to be a general issue?

[crazy-max]

Version 2 has been merged to the main branch and is therefore available via uses: docker/build-push-action@v2 (mutable tag).

As a reminder, this new version changes drastically and works with 3 new actions (login, setup-buildx and setup-qemu) that we have created. Many usage examples have been added to handle most use cases.

Can you try with it? Btw I don't think this is related to this action but an issue with the GitHub Package Registry itself. You can get support about GitHub Packages here. Thanks.

[bhordupur]

I have the same issue, but it seems that if you retry it a couple of times it sometimes works. This seems to be a general issue?

We have got the same issue last from yesterday as well. After trying 2/3 times it works. And sometimes even on the first try, it works.

[crazy-max]

@bhordupur #148 (comment)

[bhordupur]

Some time ago, we have got this fixed. It was the issue from the Azure side though.

[lupusllc]

@bhordupur we've been having this happen intermittently for quite some time to Azure Container Registries, what was the issue they/you found on the Azure side?