mirror of
https://github.com/peter-evans/dockerhub-description.git
synced 2024-11-22 12:09:33 +01:00
164 lines
6.3 KiB
Markdown
164 lines
6.3 KiB
Markdown
# Docker Hub Description
|
|
[](https://github.com/marketplace/actions/docker-hub-description)
|
|
|
|
A GitHub action to update a Docker Hub repository description from `README.md`.
|
|
|
|
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.
|
|
|
|
## Usage
|
|
|
|
```yml
|
|
- name: Docker Hub Description
|
|
uses: peter-evans/dockerhub-description@v3
|
|
with:
|
|
username: ${{ secrets.DOCKERHUB_USERNAME }}
|
|
password: ${{ secrets.DOCKERHUB_PASSWORD }}
|
|
repository: peterevans/dockerhub-description
|
|
```
|
|
|
|
### Action inputs
|
|
|
|
| Name | Description | Default |
|
|
| --- | --- | --- |
|
|
| `username` | (**required**) Docker Hub username. If updating a Docker Hub repository belonging to an organization, this user must have `Admin` permissions for the repository. | |
|
|
| `password` | (**required**) Docker Hub password or [Personal Access Token](https://docs.docker.com/docker-hub/access-tokens/) with `read/write/delete` scope. | |
|
|
| `repository` | Docker Hub repository in the format `<namespace>/<name>`. | `github.repository` |
|
|
| `short-description` | Docker Hub repository short description. | |
|
|
| `readme-filepath` | Path to the repository readme. | `./README.md` |
|
|
| `enable-url-completion` | Enables completion of relative URLs to absolute ones. See also [known Issues](#url-completion-known-issues). | `false` |
|
|
| `image-extensions` | File extensions that will be treated as images. | `bmp,gif,jpg,jpeg,png,svg,webp` |
|
|
|
|
#### Content limits
|
|
|
|
DockerHub has content limits.
|
|
The readme content is limited to 25,000 bytes, and `short-description` is limited to 100 bytes.
|
|
This action truncates content to prevent the request being rejected.
|
|
If the content has been truncated a warning will be issued in the run log.
|
|
|
|
#### Specifying the file path
|
|
|
|
The action assumes that there is a file called `README.md` located at the root of the repository.
|
|
If this is not the case the path can be specified with the `readme-filepath` input.
|
|
|
|
```yml
|
|
- name: Docker Hub Description
|
|
uses: peter-evans/dockerhub-description@v3
|
|
with:
|
|
username: ${{ secrets.DOCKERHUB_USERNAME }}
|
|
password: ${{ secrets.DOCKERHUB_PASSWORD }}
|
|
repository: peterevans/dockerhub-description
|
|
readme-filepath: ./path/to/README.md
|
|
```
|
|
|
|
#### Using the GitHub repository description
|
|
|
|
The GitHub repository description can be used for the Docker Hub `short-descripton` by passing the description from the event context.
|
|
|
|
```yml
|
|
- name: Docker Hub Description
|
|
uses: peter-evans/dockerhub-description@v3
|
|
with:
|
|
username: ${{ secrets.DOCKERHUB_USERNAME }}
|
|
password: ${{ secrets.DOCKERHUB_PASSWORD }}
|
|
repository: peterevans/dockerhub-description
|
|
short-description: ${{ github.event.repository.description }}
|
|
```
|
|
|
|
### Examples
|
|
|
|
The following workflow updates the Docker Hub repository description whenever there are changes to `README.md` and the workflow file itself on the `main` branch. This workflow assumes its location to be `.github/workflows/dockerhub-description.yml`.
|
|
|
|
```yml
|
|
name: Update Docker Hub Description
|
|
on:
|
|
push:
|
|
branches:
|
|
- main
|
|
paths:
|
|
- README.md
|
|
- .github/workflows/dockerhub-description.yml
|
|
jobs:
|
|
dockerHubDescription:
|
|
runs-on: ubuntu-latest
|
|
steps:
|
|
- uses: actions/checkout@v3
|
|
|
|
- name: Docker Hub Description
|
|
uses: peter-evans/dockerhub-description@v3
|
|
with:
|
|
username: ${{ secrets.DOCKERHUB_USERNAME }}
|
|
password: ${{ secrets.DOCKERHUB_PASSWORD }}
|
|
repository: peterevans/dockerhub-description
|
|
short-description: ${{ github.event.repository.description }}
|
|
enable-url-completion: true
|
|
```
|
|
|
|
Updates the Docker Hub repository description whenever a new release is created.
|
|
|
|
```yml
|
|
name: Update Docker Hub Description
|
|
on: release
|
|
jobs:
|
|
dockerHubDescription:
|
|
runs-on: ubuntu-latest
|
|
steps:
|
|
- uses: actions/checkout@v3
|
|
|
|
- name: Docker Hub Description
|
|
uses: peter-evans/dockerhub-description@v3
|
|
with:
|
|
username: ${{ secrets.DOCKERHUB_USERNAME }}
|
|
password: ${{ secrets.DOCKERHUB_PASSWORD }}
|
|
repository: peterevans/dockerhub-description
|
|
short-description: ${{ github.event.repository.description }}
|
|
```
|
|
|
|
### URL completion known Issues
|
|
|
|
The completion of relative URLs has some known issues:
|
|
|
|
1. Relative markdown links in inline-code and code blocks **are also converted**:
|
|
|
|
```markdown
|
|
[link in inline code](#table-of-content)
|
|
```
|
|
|
|
will be converted into
|
|
|
|
```markdown
|
|
[link in inline code](https://github.com/peter-evans/dockerhub-description/blob/main/./README.md#table-of-content)
|
|
```
|
|
|
|
2. Links containing square brackets (`]`) in the text fragment **are not converted**:
|
|
|
|
```markdown
|
|
[[link text with square brackets]](#table-of-content)
|
|
```
|
|
|
|
3. [Reference-style links/images](https://www.markdownguide.org/basic-syntax/#reference-style-links) **are not converted**.
|
|
|
|
```markdown
|
|
[table-of-content][toc]
|
|
|
|
...
|
|
|
|
[toc]: #table-of-content "Table of content"
|
|
```
|
|
|
|
## Using the Docker image independently of GitHub Actions
|
|
|
|
The image can be executed in other environments independently of GitHub Actions.
|
|
Simply volume mount the location of the `README.md` file to the container and set environment variables as follows.
|
|
|
|
```bash
|
|
docker run -v $PWD:/workspace \
|
|
-e DOCKERHUB_USERNAME='user1' \
|
|
-e DOCKERHUB_PASSWORD='xxxxx' \
|
|
-e DOCKERHUB_REPOSITORY='user1/my-docker-image' \
|
|
-e README_FILEPATH='/workspace/README.md' \
|
|
peterevans/dockerhub-description:3
|
|
```
|
|
|
|
## License
|
|
|
|
[MIT](LICENSE)
|