Autoconfigure a Java runtime

README.adoc

@@ -34,9 +34,10 @@ jobs:
       # Configure build steps as you'd normally do
 
       - name: Setup Java
-        uses: actions/setup-java@v1
+        uses: actions/setup-java@v2
         with:
-          java-version: 1.8
+          java-version: 11
+          distribution: 'zulu'
           server-id: central
           server-username: MAVEN_USERNAME
           server-password: MAVEN_CENTRAL_TOKEN
@@ -56,17 +57,10 @@ jobs:
           git config user.email "${{ github.event.head_commit.committer.email }}"
           mvn -B --file pom.xml release:prepare release:perform
 
-      # IMPORTANT!
-
-      - name: Setup Java for JReleaser
-        uses: actions/setup-java@v1
-        with:
-          java-version: 11
-
       # Create a release
 
       - name: Run JReleaser
-        uses: jreleaser/release-action@v1
+        uses: jreleaser/release-action@v2
         env:
           JRELEASER_GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
 ----
@@ -74,11 +68,12 @@ jobs:
 WARNING: Note the `fetch-depth: 0` option on the `Checkout` workflow step. It is required for JReleaser to work properly.
 Without that, JReleaser might fail or behave incorrectly.
 
-The last step executes a `full-release` with the default `jreleaser.yml` configuration that's expected
+The last step executes a `full-release` with the default `jreleaser.yml` configuration that's expected to be located at
-to be located at the root of the repository.
+the root of the repository.
 
-IMPORTANT: This action requires Java 11+ to download and execute JReleaser. If your project already builds with Java 11+
+IMPORTANT: This action requires Java 11+ to download and execute JReleaser. The action will setup a suitable Java runtime
-then you can skip the second "setup" step.
+automatically. If you would like to use a different Java version/distribution then set the value of `setup-java` to `false`
+and make sure you have a previous step with `actions/setup-java` setup as needed.
 
 == Customizing
 
@@ -88,14 +83,16 @@ Following inputs can be used as `step.with` keys
 
 [%header,cols="<2,<,<2,<3",width="100%"]
 |===
-| Name              | Type   | Default                 | Description
+| Name              | Type    | Default                 | Description
-| version           | String | latest                  | The JReleaser version to use. +
+| version           | String  | latest                  | The JReleaser version to use. +
 Should match any of the link:https://github.com/jreleaser/jreleaser/releases[published releases]. +
 You may use `latest` to pull the latest stable release or +
 `early-access` to pull the latest snapshot.
-| arguments         | String | full-release            | The JReleaser command to run.
+| arguments         | String  | full-release            | The JReleaser command to run.
-| working-directory | String | ${{ github.workspace }} | The directory to change into. +
+| working-directory | String  | ${{ github.workspace }} | The directory to change into. +
 Defaults to the directory the calling workflow runs in.
+| setup-java        | boolean | true                    | Automatically setup a Java runtime. +
+Java runtime defaults to Zulu 17.
 |===
 
 == Environment Variables
@@ -122,7 +119,7 @@ If you create a secret named `GH_PAT`, the step will look like this
 [source,yaml]
 ----
       - name: Run JReleaser
-        uses: jreleaser/release-action@v1
+        uses: jreleaser/release-action@v2
         env:
           JRELEASER_GITHUB_TOKEN: ${{ secrets.GH_PAT }}
 ----
@@ -133,7 +130,7 @@ you may apply the `GH_PAT` token as follows
 [source,yaml]
 ----
       - name: Run JReleaser
-        uses: jreleaser/release-action@v1
+        uses: jreleaser/release-action@v2
         env:
           JRELEASER_GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
           JRELEASER_HOMEBREW_GITHUB_TOKEN: ${{ secrets.GH_PAT }}

action.yml

@@ -23,9 +23,21 @@ inputs:
     default: ${{ github.workspace }}
     description: 'The directory to change into.'
 
+  setup-java:
+    required: false
+    default: 'true'
+    description: 'Setup internal Java runtime.'
+
 runs:
   using: 'composite'
   steps:
+    - name: 'Setup Java'
+      uses: actions/setup-java@v2
+      if: ${{ inputs.setup-java }} == 'true'
+      with:
+        java-version: 17
+        distribution: 'zulu'
+
     - name: 'Download JReleaser'
       shell: bash
       working-directory: ${{ inputs.working-directory }}