Fix CI

Author: jc21

Jenkinsfile

@@ -18,10 +18,10 @@ pipeline {
     }
     stage('Build') {
       steps {
-        sh 'docker run --rm -v $(pwd):/srv/app -w /srv/app jc21/node yarn --registry=$NPM_REGISTRY install'
+        sh 'docker run --rm -v $(pwd):/srv/app -w /srv/app jc21/node npm --registry=$NPM_REGISTRY install'
         sh 'docker run --rm -v $(pwd):/srv/app -w /srv/app jc21/node gulp build'
         sh 'rm -rf node_modules'
-        sh 'docker run --rm -v $(pwd):/srv/app -w /srv/app jc21/node yarn --registry=$NPM_REGISTRY install --prod'
+        sh 'docker run --rm -v $(pwd):/srv/app -w /srv/app jc21/node npm --registry=$NPM_REGISTRY install --production'
         sh 'docker run --rm -v $(pwd):/data $DOCKER_CI_TOOLS node-prune'
         sh 'docker build -t $TEMP_IMAGE_NAME .'