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Improve README and advanced usage guide (#174)

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README.md
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## License ## License
The scripts and documentation in this project are released under the [MIT License](LICENSE) The scripts and documentation in this project are released under the [MIT License](LICENSE).
## Contributions ## Contributions
Contributions are welcome! See [Contributor's Guide](docs/contributors.md) Contributions are welcome! See [Contributor's Guide](CONTRIBUTING.md)

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docs/advanced-usage.md
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```yaml ```yaml
jobs: jobs:
build: build:
runs-on: ubuntu-latest runs-on: ubuntu-latest
steps: steps:
@ -207,7 +206,7 @@ The two `settings.xml` files created from the above example look like the follow
</settings> </settings>
``` ```
***NOTE***: The `settings.xml` file is created in the Actions $HOME/.m2 directory. If you have an existing `settings.xml` file at that location, it will be overwritten. See below for using the `settings-path` to change your `settings.xml` file location. ***NOTE***: The `settings.xml` file is created in the Actions `$HOME/.m2` directory. If you have an existing `settings.xml` file at that location, it will be overwritten. See [below](#apache-maven-with-a-settings-path) for using the `settings-path` to change your `settings.xml` file location.
If you don't want to overwrite the `settings.xml` file, you can set `overwrite-settings: false` If you don't want to overwrite the `settings.xml` file, you can set `overwrite-settings: false`
@ -234,6 +233,34 @@ If `gpg-private-key` input is provided, the private key will be written to a fil
See the help docs on [Publishing a Package](https://help.github.com/en/github/managing-packages-with-github-packages/configuring-apache-maven-for-use-with-github-packages#publishing-a-package) for more information on the `pom.xml` file. See the help docs on [Publishing a Package](https://help.github.com/en/github/managing-packages-with-github-packages/configuring-apache-maven-for-use-with-github-packages#publishing-a-package) for more information on the `pom.xml` file.
## Apache Maven with a settings path
When using an Actions self-hosted runner with multiple shared runners the default `$HOME` directory can be shared by a number runners at the same time which could overwrite existing settings file. Setting the `settings-path` variable allows you to choose a unique location for your settings file.
```yaml
jobs:
build:
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v2
- name: Set up JDK 11 for Shared Runner
uses: actions/setup-java@v2
with:
distribution: '<distribution>'
java-version: '11'
server-id: github # Value of the distributionManagement/repository/id field of the pom.xml
settings-path: ${{ github.workspace }} # location for the settings.xml file
- name: Build with Maven
run: mvn -B package --file pom.xml
- name: Publish to GitHub Packages Apache Maven
run: mvn deploy -s $GITHUB_WORKSPACE/settings.xml
env:
GITHUB_TOKEN: ${{ github.token }}
```
## Publishing using Gradle ## Publishing using Gradle
```yaml ```yaml
jobs: jobs:
@ -264,35 +291,6 @@ jobs:
See the help docs on [Publishing a Package with Gradle](https://help.github.com/en/github/managing-packages-with-github-packages/configuring-gradle-for-use-with-github-packages#example-using-gradle-groovy-for-a-single-package-in-a-repository) for more information on the `build.gradle` configuration file. See the help docs on [Publishing a Package with Gradle](https://help.github.com/en/github/managing-packages-with-github-packages/configuring-gradle-for-use-with-github-packages#example-using-gradle-groovy-for-a-single-package-in-a-repository) for more information on the `build.gradle` configuration file.
## Apache Maven with a settings path
When using an Actions self-hosted runner with multiple shared runners the default `$HOME` directory can be shared by a number runners at the same time which could overwrite existing settings file. Setting the `settings-path` variable allows you to choose a unique location for your settings file.
```yaml
jobs:
build:
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v2
- name: Set up JDK 11 for Shared Runner
uses: actions/setup-java@v2
with:
distribution: '<distribution>'
java-version: '11'
server-id: github # Value of the distributionManagement/repository/id field of the pom.xml
settings-path: ${{ github.workspace }} # location for the settings.xml file
- name: Build with Maven
run: mvn -B package --file pom.xml
- name: Publish to GitHub Packages Apache Maven
run: mvn deploy -s $GITHUB_WORKSPACE/settings.xml
env:
GITHUB_TOKEN: ${{ github.token }}
```
## Hosted Tool Cache ## Hosted Tool Cache
GitHub Hosted Runners have a tool cache that comes with some Java versions pre-installed. This tool cache helps speed up runs and tool setup by not requiring any new downloads. There is an environment variable called `RUNNER_TOOL_CACHE` on each runner that describes the location of this tools cache and this is where you can find the pre-installed versions of Java. `setup-java` works by taking a specific version of Java in this tool cache and adding it to PATH if the version, architecture and distribution match. GitHub Hosted Runners have a tool cache that comes with some Java versions pre-installed. This tool cache helps speed up runs and tool setup by not requiring any new downloads. There is an environment variable called `RUNNER_TOOL_CACHE` on each runner that describes the location of this tools cache and this is where you can find the pre-installed versions of Java. `setup-java` works by taking a specific version of Java in this tool cache and adding it to PATH if the version, architecture and distribution match.