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102 lines
4.7 KiB
Markdown
102 lines
4.7 KiB
Markdown
# Docker Hub Description
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[](https://github.com/marketplace/actions/docker-hub-description)
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A GitHub action to update a Docker Hub repository description from `README.md`.
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This is useful if you `docker push` your images to Docker Hub. It provides an easy, automated way to keep your Docker Hub repository description in sync with your GitHub repository `README.md` file.
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## Usage
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```yml
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- name: Docker Hub Description
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uses: peter-evans/dockerhub-description@v2
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env:
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DOCKERHUB_USERNAME: ${{ secrets.DOCKERHUB_USERNAME }}
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DOCKERHUB_PASSWORD: ${{ secrets.DOCKERHUB_PASSWORD }}
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DOCKERHUB_REPOSITORY: peterevans/dockerhub-description
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```
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#### Required environment variables
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- `DOCKERHUB_USERNAME` - Docker Hub username. If updating a Docker Hub repository belonging to an organization, this user must have `Admin` permissions for the repository. Aliases: `DOCKER_USERNAME`
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- `DOCKERHUB_PASSWORD` - Docker Hub password. Fallback to `DOCKER_PASSWORD` if set. Aliases: `DOCKER_PASSWORD`
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- `DOCKERHUB_REPOSITORY` - The Docker Hub repository to update in the format `<namespace>/<name>`. May also be passed as a secret if considered sensitive. Aliases: `DOCKER_REPOSITORY`, `GITHUB_REPOSITORY`
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**Note**: Docker Hub [Personal Access Tokens](https://docs.docker.com/docker-hub/access-tokens/) cannot be used as they are not supported by the API. See [here](https://github.com/docker/hub-feedback/issues/1927) and [here](https://github.com/docker/hub-feedback/issues/1914) for further details. Unfortunately, this means that enabling the new 2FA feature on Docker Hub will prevent the action from working.
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#### Optionally specifying the file path
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The action assumes that there is a file called `README.md` located at the root of the repository.
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If this is not the case, the path can be overridden with an environment variable.
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```yml
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- name: Docker Hub Description
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uses: peter-evans/dockerhub-description@v2
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env:
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DOCKERHUB_USERNAME: ${{ secrets.DOCKERHUB_USERNAME }}
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DOCKERHUB_PASSWORD: ${{ secrets.DOCKERHUB_PASSWORD }}
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DOCKERHUB_REPOSITORY: peterevans/dockerhub-description
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README_FILEPATH: ./some-path/README.md
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```
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#### Examples
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The following workflow updates the Docker Hub repository description whenever there are changes to `README.md` and the workflow file itself on the `master` branch. This workflow assumes its location to be `.github/workflows/dockerhub-description.yml`.
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```yml
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name: Update Docker Hub Description
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on:
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push:
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branches:
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- master
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paths:
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- README.md
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- .github/workflows/dockerhub-description.yml
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jobs:
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dockerHubDescription:
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runs-on: ubuntu-latest
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steps:
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- uses: actions/checkout@v2
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- name: Docker Hub Description
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uses: peter-evans/dockerhub-description@v2
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env:
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DOCKERHUB_USERNAME: ${{ secrets.DOCKERHUB_USERNAME }}
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DOCKERHUB_PASSWORD: ${{ secrets.DOCKERHUB_PASSWORD }}
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DOCKERHUB_REPOSITORY: peterevans/dockerhub-description
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```
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Updates the Docker Hub repository description whenever a new release is created.
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```yml
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name: Update Docker Hub Description
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on: release
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jobs:
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dockerHubDescription:
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runs-on: ubuntu-latest
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steps:
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- uses: actions/checkout@v2
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- name: Docker Hub Description
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uses: peter-evans/dockerhub-description@v2
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env:
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DOCKERHUB_USERNAME: ${{ secrets.DOCKERHUB_USERNAME }}
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DOCKERHUB_PASSWORD: ${{ secrets.DOCKERHUB_PASSWORD }}
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DOCKERHUB_REPOSITORY: peterevans/dockerhub-description
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```
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## Using the Docker image independently of GitHub Actions
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The image can be executed in other environments independently of GitHub Actions.
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Simply volume mount the location of the `README.md` file to the container and set environment variables as follows.
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```bash
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docker run -v $PWD:/workspace \
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-e DOCKERHUB_USERNAME='user1' \
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-e DOCKERHUB_PASSWORD='xxxxx' \
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-e DOCKERHUB_REPOSITORY='user1/my-docker-image' \
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-e README_FILEPATH='/workspace/README.md' \
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peterevans/dockerhub-description:2.2
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```
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## License
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[MIT](LICENSE)
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