2020/10/27 postscript

There is no official announcement yet, but when the company contacted GitHub support,

These rate limits will not apply to any Docker Hub connections from GitHub Actions workflows.

I received the answer.

The following actions are likely to be ** unnecessary. ** **

Problems that occur

Starting November 2020, Docker Hub will limit the number of pulls for users who are not logged in. Or rather, it has already begun in stages.

-Official Announcement (English) -Docker Hub pull limit has already started

Also about GitHub Actions

toomanyrequests: Too Many Requests. Please see https://docs.docker.com/docker-hub/download-rate-limit/

Docker image pull fails with the error and the workflow is likely to fail (I haven't had an error yet)

Because of the rate-limit of the IP address, an error can occur regardless of the number of pulls you have made.

counter-measure

As introduced in Official Announcement (English), [docker / login-action](https://github. Let's use com / docker / login-action # dockerhub).

Yaml after correspondence

`workflow.yml`


jobs:
  HogeHogeJob:
    name: HogeHogeJob
    runs-on: ubuntu-latest
    steps:
      #Add these 5 lines
      - name: Login to DockerHub
        uses: docker/login-action@v1
        with:
          username: ${{ secrets.DOCKERHUB_USERNAME }}
          password: ${{ secrets.DOCKERHUB_TOKEN }}

      #The rest is fine as before
      - name: Checkout
        uses: actions/checkout@v2

      - name: Setup python
        uses: actions/setup-python@v2
        with:
          python-version: 3.7

Register DOCKERHUB_USERNAME and DOCKERHUB_TOKEN on GitHub as secrets in advance (Official Doc encrypted-secrets #% E3% 83% AA% E3% 83% 9D% E3% 82% B8% E3% 83% 88% E3% 83% AA% E3% 81% AE% E6% 9A% 97% E5% 8F % B7% E5% 8C% 96% E3% 81% 95% E3% 82% 8C% E3% 81% 9F% E3% 82% B7% E3% 83% BC% E3% 82% AF% E3% 83% AC % E3% 83% 83% E3% 83% 88% E3% 81% AE% E4% BD% 9C% E6% 88% 90))

Please note that it is recommended to use an Access Token for ** DOCKERHUB_TOKEN instead of a password **. It works with a password, but let's issue an Access Token properly.

How to issue an Access Token

Log in to https://hub.docker.com/
Account Settings from the user name in the upper right
Security-> New Access Token-> Then get on the flow

Register the issued Access Token as DOCKERHUB_TOKEN and you're done. You will be able to log in with docker / login-action.

GitHub Actions users now prepare for Docker Hub pull limits