added publish workflow

Author: yweber

.github/workflows/publish.yml

@@ -6,15 +6,17 @@ on:
       - created
 
 jobs:
-  build:
+  publish:
+    environment: mavenCentralPublish
     runs-on: ubuntu-latest
     steps:
       - name: checkout
         uses: actions/checkout@v2
       - name: setup java
-        uses: actions/setup-java@v1
+        uses: actions/setup-java@v2
         with:
-          java-version: "11"
+          distribution: 'adopt'
+          java-version: '11'
       - name: Check
         run: ./graldew check
       - name: Publish to Maven Central
@@ -25,3 +27,4 @@ jobs:
           ORG_GRADLE_PROJECT_sonatypePassword: ${{ secrets.SONATYPE_PASSWORD }}
         run: ./gradlew publishToSonatype closeAndReleaseSonatypeStagingRepository
 
+