Fix scopes again.

Jenkinsfile

@@ -15,29 +15,27 @@ node("docker && linux && amd64") {
 	}
 
 	stage("Build") {
-		def imageVersion
-
 		versions.each { version ->
-			def tomcatVersion = version[0]
-			def jreVersion = version[1]
-			def image
-
 			ansiColor {
+				def tomcatVersion = version[0]
+				def jreVersion = version[1]
+				def image
+
 				image = docker.build(
 					"${dockerNamespace}/${dockerBase}:tomcat${tomcatVersion}-${jreVersion}",
 					"--build-arg TOMCAT_VERSION=${tomcatVersion} --build-arg TOMCAT_JRE=${jreVersion} .")
-			}
 
-			def guacamoleVersion
-			image.inside("-w /tmp") {
-				ansiColor {
-					sh """
-					unzip /opt/guacamole/guacamole.war META-INF/maven/org.apache.guacamole/guacamole/pom.properties
-					"""
-					guacamoleVersion = sh(
-						script: "grep -Po '(?i)^version=\\K.+\\s*\$' META-INF/maven/org.apache.guacamole/guacamole/pom.properties",
-						returnStdout: true,
-					).trim()
+				def guacamoleVersion
+				image.inside("-w /tmp") {
+					ansiColor {
+						sh """
+						unzip /opt/guacamole/guacamole.war META-INF/maven/org.apache.guacamole/guacamole/pom.properties
+						"""
+						guacamoleVersion = sh(
+							script: "grep -Po '(?i)^version=\\K.+\\s*\$' META-INF/maven/org.apache.guacamole/guacamole/pom.properties",
+							returnStdout: true,
+						).trim()
+					}
 				}
 			}