temurin: add support for Alpine Linux

.github/workflows/e2e-versions.yml

@@ -62,6 +62,32 @@ jobs:
         run: bash __tests__/verify-java.sh "${{ matrix.version }}" "${{ steps.setup-java.outputs.path }}"
         shell: bash
 
+  setup-java-alpine-linux:
+    name: ${{ matrix.distribution }} ${{ matrix.version }} (jdk-x64) - alpine-linux - ${{ matrix.os }}
+    runs-on: ${{ matrix.os }}
+    container:
+      image: alpine:latest
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest]
+        distribution: ['temurin', 'sapmachine']
+        version: ['21', '17']
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+      - name: Install bash
+        run: apk add --no-cache bash
+      - name: setup-java
+        uses: ./
+        id: setup-java
+        with:
+          java-version: ${{ matrix.version }}
+          distribution: ${{ matrix.distribution }}
+      - name: Verify Java
+        run: bash __tests__/verify-java.sh "${{ matrix.version }}" "${{ steps.setup-java.outputs.path }}"
+        shell: bash
+
   setup-java-major-minor-versions:
     name: ${{ matrix.distribution }} ${{ matrix.version }} (jdk-x64) - ${{ matrix.os }}
     needs: setup-java-major-versions

dist/setup/index.js

@@ -125230,6 +125230,11 @@ class TemurinDistribution extends base_installer_1.JavaBase {
                 return 'mac';
             case 'win32':
                 return 'windows';
+            case 'linux':
+                if (fs_1.default.existsSync('/etc/alpine-release')) {
+                    return 'alpine-linux';
+                }
+                return 'linux';
             default:
                 return process.platform;
         }
@@ -127946,4 +127951,4 @@ module.exports = JSON.parse('[[[0,44],"disallowed_STD3_valid"],[[45,46],"valid"]
 /******/ 	module.exports = __webpack_exports__;
 /******/ 	
 /******/ })()
-;
+;

src/distributions/temurin/installer.ts

@@ -173,6 +173,11 @@ export class TemurinDistribution extends JavaBase {
         return 'mac';
       case 'win32':
         return 'windows';
+      case 'linux':
+        if (fs.existsSync('/etc/alpine-release')) {
+          return 'alpine-linux';
+        }
+        return 'linux';
       default:
         return process.platform;
     }