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@@ -64,6 +64,7 @@ pipeline {
 				echo 'Checking Syntax ...'
 				sh 'docker pull nginxproxymanager/nginx-full:certbot-node'
 				// See: https://github.com/yarnpkg/yarn/issues/3254
+				script {
 					SHOUTPUT = sh (
 						script: '''docker run --rm \\
 						-v "$(pwd)/backend:/app" \\
@@ -74,8 +75,10 @@ pipeline {
 						''',
 						returnStdout: true
 					).trim()
+				}
 
 				echo 'Docker Build ...'
+				script {
 					SHOUTPUT = sh (
 						script: '''docker build --pull --no-cache --squash --compress \\
 						-t "${IMAGE}:ci-${BUILD_NUMBER}" \\
@@ -90,6 +93,7 @@ pipeline {
 						returnStdout: true
 					).trim()
 				}
+			}
 			post {
 				failure {
 					script {