mirror of
https://github.com/peter-evans/dockerhub-description.git
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91 lines
3.7 KiB
Markdown
91 lines
3.7 KiB
Markdown
# Docker Hub Description
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[](https://github.com/marketplace/actions/docker-hub-description)
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[](https://circleci.com/gh/peter-evans/dockerhub-description/tree/master)
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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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```hcl
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action "Docker Hub Description" {
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uses = "peter-evans/dockerhub-description@v1.0.1"
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secrets = ["DOCKERHUB_USERNAME", "DOCKERHUB_PASSWORD", "DOCKERHUB_REPOSITORY"]
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}
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```
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#### Required secrets
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- `DOCKERHUB_USERNAME` - Docker Hub username
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- `DOCKERHUB_PASSWORD` - Docker Hub password
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- `DOCKERHUB_REPOSITORY` - The name of the Docker Hub repository to update. The action combines this with the username to locate the repository. i.e. `username/repository`
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Note that `DOCKERHUB_USERNAME` and `DOCKERHUB_REPOSITORY` may also be environment variables if not considered sensitive.
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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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```hcl
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action "Docker Hub Description" {
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uses = "peter-evans/dockerhub-description@v1.0.1"
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secrets = ["DOCKERHUB_USERNAME", "DOCKERHUB_PASSWORD", "DOCKERHUB_REPOSITORY"]
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env = {
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README_FILEPATH = "./some-path/README.md"
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}
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}
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```
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#### Examples
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Updates the Docker Hub repository description whenever there is a `git push` to the `master` branch.
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```hcl
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workflow "Update Docker Hub Description" {
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resolves = ["Docker Hub Description"]
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on = "push"
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}
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action "Filter master branch" {
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uses = "actions/bin/filter@master"
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args = "branch master"
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}
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action "Docker Hub Description" {
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needs = ["Filter master branch"]
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uses = "peter-evans/dockerhub-description@v1.0.1"
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secrets = ["DOCKERHUB_USERNAME", "DOCKERHUB_PASSWORD", "DOCKERHUB_REPOSITORY"]
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}
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```
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Updates the Docker Hub repository description whenever a new release is created.
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```hcl
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workflow "Update Docker Hub Description" {
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resolves = ["Docker Hub Description"]
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on = "release"
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}
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action "Docker Hub Description" {
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uses = "peter-evans/dockerhub-description@v1.0.1"
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secrets = ["DOCKERHUB_USERNAME", "DOCKERHUB_PASSWORD", "DOCKERHUB_REPOSITORY"]
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}
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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='my-docker-image' \
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-e README_FILEPATH='/workspace/README.md' \
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peterevans/dockerhub-description:1.0.1
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```
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## License
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MIT License - see the [LICENSE](LICENSE) file for details
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