Merge pull request #29 from clarkbw/maven-auth

Adding maven auth support

README.md

@@ -13,7 +13,7 @@ This action sets up a java environment for use in actions by:
 
 See [action.yml](action.yml)
 
-Basic:
+## Basic
 ```yaml
 steps:
 - uses: actions/checkout@v1
@@ -25,7 +25,7 @@ steps:
 - run: java -cp java HelloWorldApp
 ```
 
-From local file:
+## Local file
 ```yaml
 steps:
 - uses: actions/checkout@v1
@@ -37,7 +37,7 @@ steps:
 - run: java -cp java HelloWorldApp
 ```
 
-Matrix Testing:
+## Matrix Testing
 ```yaml
 jobs:
   build:
@@ -56,6 +56,126 @@ jobs:
       - run: java -cp java HelloWorldApp
 ```
 
+## Publishing using Apache Maven
+```yaml
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v1
+    - name: Set up JDK 1.8
+      uses: actions/setup-java@v1
+      with:
+        java-version: 1.8
+
+    - name: Build with Maven
+      run: mvn -B package --file pom.xml
+
+    - name: Publish to GitHub Packages Apache Maven
+      run: mvn deploy
+      env:
+        GITHUB_TOKEN: ${{ github.token }} # GITHUB_TOKEN is the default env for the password
+
+    - name: Set up Apache Maven Central
+      uses: actions/setup-java@v1
+      with: # running setup-java again overwrites the settings.xml
+        java-version: 1.8
+        server-id: maven # Value of the distributionManagement/repository/id field of the pom.xml
+        server-username: MAVEN_USERNAME # env variable for username in deploy
+        server-password: MAVEN_CENTRAL_TOKEN # env variable for token in deploy
+
+    - name: Publish to Apache Maven Central
+      run: mvn deploy 
+      env:
+        MAVEN_USERNAME: maven_username123
+        MAVEN_CENTRAL_TOKEN: ${{ secrets.MAVEN_CENTRAL_TOKEN }}
+```
+
+The two `settings.xml` files created from the above example look like the following.
+
+`settings.xml` file created for the first deploy to GitHub Packages
+```xml
+<servers>
+    <server>
+      <id>github</id>
+      <username>${env.GITHUB_ACTOR}</username>
+      <password>${env.GITHUB_TOKEN}</password>
+    </server>
+</servers>
+```
+
+`settings.xml` file created for the second deploy to Apache Maven Central
+```xml
+<servers>
+    <server>
+      <id>maven</id>
+      <username>${env.MAVEN_USERNAME}</username>
+      <password>${env.MAVEN_CENTRAL_TOKEN}</password>
+    </server>
+</servers>
+```
+
+***NOTE: The `settings.xml` file is created in the Actions $HOME 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.***	
+
+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.
+
+## Publishing using Gradle
+```yaml
+jobs:
+
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v1
+
+    - name: Set up JDK 1.8
+      uses: actions/setup-java@v1
+
+    - name: Build with Gradle
+      run: gradle build
+
+    - name: Publish to GitHub Packages
+      run: gradle publish
+      env:
+        USERNAME: ${{ github.actor }}
+        PASSWORD: ${{ secrets.GITHUB_TOKEN }}
+```
+
+***NOTE: The `USERNAME` and `PASSWORD` need to correspond to the credentials environment variables used in the publishing section of your `build.gradle`.***	
+
+See the help docs on [Publishing a Package with Gradle](https://help.github.com/en/github/managing-packages-with-github-packages/configuring-gradle-for-use-with-github-packages#example-using-gradle-groovy-for-a-single-package-in-a-repository) for more information on the `build.gradle` configuration file.
+
+## Apache Maven with a settings path
+
+When using an Actions self-hosted runner with multiple shared runners the default `$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@v1
+    - name: Set up JDK 1.8 for Shared Runner
+      uses: actions/setup-java@v1
+      with:
+        java-version: 1.8
+        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 }}
+```
+
 # License
 
 The scripts and documentation in this project are released under the [MIT License](LICENSE)