Resolve "More env variables for Azure deployment"

Closes #364

.gitlab-ci.yml

@@ -5,6 +5,7 @@ variables:
   TAG: "${TAG:-latest}"
   TRIVY_NO_PROGRESS: "true"
   TRIVY_CACHE_DIR: ".trivycache/"
+  "_JAVA_OPTIONS": "-Dlogging.level.at.tuwien.=INFO"
 
 image: maven:3-openjdk-17
 
@@ -24,7 +25,7 @@ build-metadata-service:
   image: maven:3-openjdk-17
   stage: build-backend
   script:
-    - "mvn -f ./dbrepo-metadata-service/pom.xml clean test verify"
+    - "mvn -f ./dbrepo-metadata-service/pom.xml clean package -DskipTests"
 
 build-analyse-service:
   image: python:3.9-slim