Add env variable to set the Java distribution to use

deployments/azure-webapps-java-jar.yml

@@ -22,6 +22,7 @@ name: Build and deploy JAR app to Azure Web App
 env:
   AZURE_WEBAPP_NAME: your-app-name    # set this to the name of your Azure Web App
   JAVA_VERSION: '11'                  # set this to the Java version to use
+  DISTRIBUTION: zulu                  # set this to the Java distribution
 
 on:
   push:
@@ -40,6 +41,7 @@ jobs:
         uses: actions/setup-java@v2.3.1
         with:
           java-version: ${{ env.JAVA_VERSION }}
+          distribution: ${{ env.DISTRIBUTION }}
           cache: 'maven'
 
       - name: Build with Maven