added jacoco.skip=false

.github/workflows/ci.yml

@@ -26,7 +26,14 @@ jobs:
           cache: maven
 
       # https://docs.travis-ci.com/user/languages/java/#maven-dependency-management
-      - run: mvn install -DskipTests=true -Dmaven.javadoc.skip=true -B -V # -T 1C
+      - run: >
+          mvn
+          install
+          --define jacoco.skip=false
+          --define maven.javadoc.skip=true
+          --define skipTests=true
+          --batch-mode
+          --show-version
 
       # https://docs.travis-ci.com/user/languages/java/#maven-default-script-command
       # tests are interdependent and require a specific order