Skip signing artifacts on CI

Author: AndreiZaitcev

.github/workflows/main.yml

@@ -28,6 +28,7 @@ jobs:
           GITHUB_IS_PULL_REQUEST: ${{ github.event_name == 'pull_request' }}
           ORG_GRADLE_PROJECT_NEXUS_USERNAME: ${{ secrets.NEXUS_USERNAME }}
           ORG_GRADLE_PROJECT_NEXUS_PASSWORD: ${{ secrets.NEXUS_PASSWORD }}
+          ORG_GRADLE_PROJECT_IS_CI: true
 
       - name: Run coverage
         env:

build-scripts/gradle-mvn-push.gradle

@@ -23,6 +23,10 @@ def getRepositoryPassword() {
     return hasProperty('NEXUS_PASSWORD') ? NEXUS_PASSWORD : ""
 }
 
+def isCI() {
+    return hasProperty('IS_CI') ? IS_CI == "true" : false
+}
+
 java {
     withJavadocJar()
     withSourcesJar()
@@ -82,7 +86,7 @@ afterEvaluate {
     }
 
     signing {
-        required { isReleaseBuild() }
+        required { isReleaseBuild() && !isCI() }
         sign publishing.publications.release
     }
 }