try maven:latest as base image

.gitlab-ci.yml

@@ -10,13 +10,10 @@ build:
     - mvn package
 
 test_parsing:
-  image: ubuntu:rolling
+  image: maven:latest
   stage: test
   tags:
     - docker
-  before_script:
-    - apt update
-    - apt install -y build-essential openjdk-13-jre-headless
   script:
      - make testJava