CAPAUT-471 Maven publish include for build process

gradle/build-mavenpublish.gradle

@@ -0,0 +1,53 @@
+/*
+ * Enables maven publish handling on build process
+ * 
+ * Project: gradle
+ * Author: Marc Böhm <marc.boehm@captica.de>
+ * License: MIT License (see LICENSE.md)
+ * 
+ * Copyright (c) captica GmbH est. 2021
+ */
+
+// Load external plugins
+buildscript {
+    repositories {
+        gradlePluginPortal()
+        mavenCentral()
+    } 
+}
+
+project.ext {
+    mavenAccessToken = ( project.hasProperty('MAVEN_PUBLISH_ACCESS_TOKEN') ? MAVEN_ACCESS_TOKEN : null )
+    mavenRepositoryUrl = ( project.hasProperty('MAVEN_PUBLISH_REPOSITORY_URL') ? MAVEN_PUBLISH_REPOSITORY_URL : null )
+}
+
+// Fail fast
+if ( mavenAccessToken == null || mavenRepositoryUrl == null ) {
+    throw new GradleScriptException("Missing required properties: MAVEN_PUBLISH_ACCESS_TOKEN and MAVEN_PUBLISH_REPOSITORY_URL")
+}
+
+// Apply plugins
+apply plugin: 'maven-publish'
+
+// Configure maven publish
+publishing {
+	publications {
+		bootJava(MavenPublication) {
+			artifact tasks.named("bootJar")
+		}
+	}
+	repositories {
+		maven {
+			url uri(mavenRepositoryUrl)
+
+            credentials(HttpHeaderCredentials) {
+                name = "Authorization"
+                value = "token ${mavenAccessToken}"
+            }
+
+            authentication {
+                header(HttpHeaderAuthentication)
+            }
+		}
+	}
+}