diff --git a/next/Jenkinsfile b/next/Jenkinsfile
index 589d003e2..2e78698c8 100644
--- a/next/Jenkinsfile
+++ b/next/Jenkinsfile
@@ -61,7 +61,7 @@ spec:
                         container('theia-dev') {
                             withCredentials([string(credentialsId: "github-bot-token", variable: 'GITHUB_TOKEN')]) {
                                 script {
-                                    buildNext(false, 1200)
+                                    buildNext('linux')
                                 }
                             }
                         }
@@ -78,7 +78,9 @@ spec:
                     }
                     steps {
                         script {
-                            buildNext(false, 60)
+                            sh "npm config set registry https://registry.npmjs.org/"
+                            buildNext('mac')
+                            sh "npm config set registry https://registry.npmjs.org/"
                         }
                     }
                     post {
@@ -94,8 +96,8 @@ spec:
                     steps {
                         script {
                             sh "npm config set msvs_version 2017"
-                            sh "npx node-gyp install 14.20.0"
-                            buildNext(true, 60)
+                            // sh "npx node-gyp@9.4.0 install 14.20.0"
+                            // buildNext('windows')
                         }
                     }
                     post {
@@ -123,70 +125,148 @@ spec:
     }
 }
 
-def buildNext(boolean runTests, int sleepBetweenRetries) {
-    int MAX_RETRY = 3
+def buildNext(String os) {
 
-    checkout scm
+    def VERDACCIO_CONFIG = "uninit"
+    def VERDACCIO_UPDATE_CONFIG_SCRIPT  = "uninit"
+
+    if (os == 'mac') {
+        echo "mac"
+        VERDACCIO_CONFIG = """/Users/genie.theia/.config/verdaccio/config.yaml"""
+        VERDACCIO_UPDATE_CONFIG_SCRIPT = """sed -i -e s/\\\$authenticated/\\\$anonymous/g /Users/genie.theia/.config/verdaccio/config.yaml"""
+    } 
+    // else if (os == 'windows') {
+    // } 
+    else {
+        echo "else"
+        VERDACCIO_CONFIG = """${env.WORKSPACE}/verdaccio/verdaccio/config.yaml"""
+        VERDACCIO_UPDATE_CONFIG_SCRIPT = """sed -i -e s/\\\$authenticated/\\\$anonymous/g ${env.WORKSPACE}/verdaccio/verdaccio/config.yaml"""
+    }
 
-    // merge next branch into master to get any known fixes for next version
-    // TODO there might be a more elegant way to merge a branch into this one 
-    // using a jenkings plugin from here
     sh "git config user.email \"not@real.user\""
     sh "git config user.name \"Not a real user\""
-    sh "git fetch origin next"
-    sh "git merge FETCH_HEAD"
     sh "node --version"
 
-    sh "export NODE_OPTIONS=--max_old_space_size=4096"
+    cleanWs()
+    checkout scm
+    sh "git clone https://github.com/eclipse-theia/theia.git"
 
-    // regular build
-    sh "printenv && yarn cache dir"
+    sh """
+        echo ${VERDACCIO_UPDATE_CONFIG_SCRIPT}
+        echo ${VERDACCIO_CONFIG}
+        mkdir cache
+        export LOCAL_CACHE_PATH=\${PWD}/cache
+        echo \$LOCAL_CACHE_PATH
+        export npm_config_cache=\$LOCAL_CACHE_PATH
 
-    sh "yarn cache clean"
-    try {
-        sh(script: 'yarn --frozen-lockfile --force')
-    } catch(error) {
-        retry(MAX_RETRY) {
-            sleep(sleepBetweenRetries)
-            echo "yarn failed - Retrying"
-            sh(script: 'yarn --frozen-lockfile --force')        
-        }
-    }
+        echo "Install verdaccio"
+        mkdir verdaccio
+        export VERDACCIO_STORAGE_PATH=\${PWD}/verdaccio
+        echo \$VERDACCIO_STORAGE_PATH
+        cd verdaccio
+        touch .npmrc
+        mkdir node_modules
+        npm install verdaccio
 
-    echo "Updating theia versions to next"
-    sh "yarn update:next"
-    try {
-        sh(script: 'yarn --force')
-    } catch(error) {
-        retry(MAX_RETRY) {
-            sleep(sleepBetweenRetries)
-            echo "yarn failed - Retrying"
-            sh(script: 'yarn --force')        
-        }
-    }
+        echo "Starting verdaccio"
+        REGISTRY=http://localhost:4873/
+        node_modules/.bin/verdaccio &
+        VERDACCIO_PID=\$!
+        echo \$VERDACCIO_PID
 
-    echo "Upgrading versions"
-    sh "yarn upgrade"
-    sh "git clean -xfd"
-    try {
-        sh(script: 'yarn --force')
-    } catch(error) {
-        retry(MAX_RETRY) {
-            sleep(sleepBetweenRetries)
-            echo "yarn failed - Retrying"
-            sh(script: 'yarn --force')        
-        }
-    }
+        echo "Reconfigure verdaccio"
+        sleep 20 && ps aux && kill \$VERDACCIO_PID && sleep 20
+        \${VERDACCIO_UPDATE_CONFIG_SCRIPT}
+        cat \${VERDACCIO_CONFIG}
 
-    sh "rm -rf ./${distFolder}"
-    sh "yarn build"
-    sh "yarn download:plugins"
-    sshagent(['projects-storage.eclipse.org-bot-ssh']) {
-        sh "yarn electron package:preview"
-    }
-    if (runTests) {
-        wrap([$class: 'Xvnc', takeScreenshot: false, useXauthority: true]) {
-            sh 'yarn electron test'
-        }
-    } 
+        echo "Start verdaccio again"
+        node_modules/.bin/verdaccio &
+        VERDACCIO_PID=\$!
+        echo \$VERDACCIO_PID
+
+        echo "Build Theia..."
+        cd ../theia
+        touch .npmrc
+        echo "registry=http://localhost:4873/" >> .npmrc
+        yarn
+        yarn build
+
+        echo "Publish Theia..."
+        yarn lerna publish preminor --exact --canary --preid next --dist-tag next --no-git-reset --no-git-tag-version --no-push --yes --registry \$REGISTRY
+
+        echo "Build Blueprint..."
+        cd ..
+        yarn && yarn update:next
+        yarn --registry http://localhost:4873/
+        yarn build && yarn download:plugins && yarn electron package
+
+        echo "Stop Verdaccio"
+        kill \$VERDACCIO_PID
+    """
+
+    // int MAX_RETRY = 3
+
+    // checkout scm
+
+    // // merge next branch into master to get any known fixes for next version
+    // // TODO there might be a more elegant way to merge a branch into this one 
+    // // using a jenkings plugin from here
+    // sh "git config user.email \"not@real.user\""
+    // sh "git config user.name \"Not a real user\""
+    // sh "git fetch origin next"
+    // sh "git merge FETCH_HEAD"
+    // sh "node --version"
+
+    // sh "export NODE_OPTIONS=--max_old_space_size=4096"
+
+    // // regular build
+    // sh "printenv && yarn cache dir"
+
+    // sh "yarn cache clean"
+    // try {
+    //     sh(script: 'yarn --frozen-lockfile --force')
+    // } catch(error) {
+    //     retry(MAX_RETRY) {
+    //         sleep(sleepBetweenRetries)
+    //         echo "yarn failed - Retrying"
+    //         sh(script: 'yarn --frozen-lockfile --force')        
+    //     }
+    // }
+
+    // echo "Updating theia versions to next"
+    // sh "yarn update:next"
+    // try {
+    //     sh(script: 'yarn --force')
+    // } catch(error) {
+    //     retry(MAX_RETRY) {
+    //         sleep(sleepBetweenRetries)
+    //         echo "yarn failed - Retrying"
+    //         sh(script: 'yarn --force')        
+    //     }
+    // }
+
+    // echo "Upgrading versions"
+    // sh "yarn upgrade"
+    // sh "git clean -xfd"
+    // try {
+    //     sh(script: 'yarn --force')
+    // } catch(error) {
+    //     retry(MAX_RETRY) {
+    //         sleep(sleepBetweenRetries)
+    //         echo "yarn failed - Retrying"
+    //         sh(script: 'yarn --force')        
+    //     }
+    // }
+
+    // sh "rm -rf ./${distFolder}"
+    // sh "yarn build"
+    // sh "yarn download:plugins"
+    // sshagent(['projects-storage.eclipse.org-bot-ssh']) {
+    //     sh "yarn electron package:preview"
+    // }
+    // if (runTests) {
+    //     wrap([$class: 'Xvnc', takeScreenshot: false, useXauthority: true]) {
+    //         sh 'yarn electron test'
+    //     }
+    // } 
 }