Update customUrl to dynamically use Jenkins domain

- Dynamically build the customUrl using the extracted domain using getJenkinsDomain()

resolves:adoptium#5286

Signed-off-by: Anna Babu Palathingal <anna.bp@ibm.com>

buildenv/jenkins/JenkinsfileBase

@@ -207,7 +207,9 @@ def setupParallelEnv() {
 				// check for each lib. If lib does not exist, donwload it.
 				// If lib exists, SHA will be checked. Re-download if SHA does not match.
 				timeout(time: 20, unit: 'MINUTES') {
-					def customUrl = "https://ci.adoptium.net/job/test.getDependency/lastSuccessfulBuild/artifact/"
+                    def jenkinsDomain = getJenkinsDomain()
+					def customUrl = "https://${jenkinsDomain}/job/test.getDependency/lastSuccessfulBuild/artifact/"
+                    println "Custom URL: ${customUrl}"
 					if (PLATFORM.contains("windows")) {
 						env.LIB_DIR = env.LIB_DIR.replaceAll("\\\\", "/")
 					}
@@ -315,7 +317,7 @@ def setupParallelEnv() {
 
 }
 
-// Returns NUM_LIST from parallelList.mk. 
+// Returns NUM_LIST from parallelList.mk.
 // NUM_LIST can be different than numOfMachines.
 def genParallelList(PARALLEL_OPTIONS) {
 	String unsetLLP = ""
@@ -415,7 +417,7 @@ def setup() {
 			if (params.SDK_RESOURCE == 'nightly') {
 				// remove single quote to allow variables to be set in CUSTOMIZED_SDK_URL
 				CUSTOMIZED_SDK_URL_OPTION = "-c ${params.CUSTOMIZED_SDK_URL}"
-			} else if (!params.SDK_RESOURCE || params.SDK_RESOURCE == 'customized') { 
+			} else if (!params.SDK_RESOURCE || params.SDK_RESOURCE == 'customized') {
 				SDK_RESOURCE = "customized"
 				CUSTOMIZED_SDK_URL_OPTION = "-c '${params.CUSTOMIZED_SDK_URL}'"
 				if (params.ADDITIONAL_ARTIFACTS_REQUIRED == "RI_JDK") {
@@ -437,7 +439,7 @@ def setup() {
 				error("SDK_RESOURCE: ${params.SDK_RESOURCE} and CUSTOMIZED_SDK_URL: ${params.CUSTOMIZED_SDK_URL} combo is not supported!")
 			}
 		} else {
-			if (params.SDK_RESOURCE == 'customized') { 
+			if (params.SDK_RESOURCE == 'customized') {
 				error("SDK_RESOURCE: ${params.SDK_RESOURCE}, please provide CUSTOMIZED_SDK_URL")
 			} else {
 				CUSTOMIZED_SDK_URL_OPTION = ""
@@ -466,7 +468,7 @@ def setup() {
 		if (CLONE_OPENJ9_OPTION == "") {
 			if (env.BUILD_LIST.contains('functional')) {
 				CLONE_OPENJ9_OPTION = "--clone_openj9 true"
-				// If USE_TESTENV_PROPERTIES = false, set Openj9 repo and brnach. 
+				// If USE_TESTENV_PROPERTIES = false, set Openj9 repo and brnach.
 				// Otherwise, testenv.properties will be used.
 				// And the Openj9 repo and brnach values will be set in get.sh
 				if(!params.USE_TESTENV_PROPERTIES) {