Possible working CI.

.gitlab-ci.yml

@@ -0,0 +1,17 @@
+image: gradle:7.3-jdk11
+
+variables:
+  GRADLE_OPTS: "-Dorg.gradle.daemon=false"
+
+build:
+  stage: build
+  script: gradle --build-cache shadowJar
+  cache:
+    key: "$CI_COMMIT_REF_NAME"
+    policy: push
+    paths:
+      - build
+      - .gradle
+  artifacts:
+    paths:
+      - **/build/libs/*.jar

build.gradle.kts

@@ -40,6 +40,8 @@ subprojects {
     targetCompatibility = javaVersion
   }
 
+  tasks["jar"].enabled = false
+
   tasks.processResources {
     val props = mapOf("version" to version)
     inputs.properties(props)