diff --git a/.github/workflows/ghbuild.yml b/.github/workflows/ghbuild.yml
new file mode 100644
index 0000000000..c15d8df3b0
--- /dev/null
+++ b/.github/workflows/ghbuild.yml
@@ -0,0 +1,23 @@
+# This workflow reuses the World Health Organization GitHub action for building IGs
+# Initial idea by Carl Leitner
+# Change log:
+# v0.1.0
+# 2021-06-18: publish default branches to / , other branches branches/<branch>
+# 2021-11-26: reusable workflow
+
+name: ghbuild
+
+# Controls when the action will run. 
+on:
+  # Triggers the workflow on push or pull request events for any main branch
+  push:
+    branches-ignore:    
+      - 'gh-pages'
+  pull_request:
+
+  workflow_dispatch:
+
+jobs:
+  # This workflow contains a single job called "build"
+  call_build: 
+    uses: WorldHealthOrganization/smart-base/.github/workflows/ghbuild.yml@main
diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
deleted file mode 100644
index bf9be539d8..0000000000
--- a/.github/workflows/main.yml
+++ /dev/null
@@ -1,83 +0,0 @@
-# This is a simple workflow that runs the publisher and copies the output to https://<owner>.github.io/<repo>/index.html
-# Based on the instructions from Elliot Silver, available from: https://www.argentixinfo.com/archives/156
-# Make sure your repo has a branch called gh-pages
-
-
-# Update 15-Jan-2021: This now adds a FTP upload feature. This uses a repository secret.
-# Action documentation
-# https://github.com/marketplace/actions/ftp-deploy
-
-name: CI
-
-# Controls when the action will run. 
-on:
-  # Triggers the workflow on push or pull request events but only for the main branch and any other indicated branches
-  push:
-    branches: 
-      - main
-      - master
-      - rc1
-      - rc2
-      - qr-encoding
-      - rc2-umbrella
-      - rc2-ddcc
-      - ddcc-tr
-  pull_request:
-    branches: 
-      - main
-      - master
-      - rc1
-      - rc2      
-
-  # Allows you to run this workflow manually from the Actions tabs
-  workflow_dispatch:
-
-# A workflow run is made up of one or more jobs that can run sequentially or in parallel
-jobs:
-  # This workflow contains a single job called "build"
-  build:
-    # The type of runner that the job will run on
-    runs-on: ubuntu-latest
-
-    # Steps represent a sequence of tasks that will be executed as part of the job
-    steps:
-      # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
-      - uses: actions/checkout@v2
-      - name: Update the image to the latest publisher
-        uses: docker://hl7fhir/ig-publisher-base:latest
-        with:
-          # Get the latest publisher - don't run the batch script but run the line directly
-          args: curl -L https://github.com/HL7/fhir-ig-publisher/releases/download/1.5.1/publisher.jar -o ./input-cache/publisher.jar --create-dirs
-
-      - name: Run the IG publisher
-        uses: docker://hl7fhir/ig-publisher-base:latest
-        with:
-          # Run the publisher - don't run the batch script but run the line directly
-          args: java -Xmx4g -jar ./input-cache/publisher.jar publisher -ig .
-
-      - run: sed -i 's/\(<!--\s*ReleaseHeader\s*-->\s*<p id="publish-box">\).*v\([0-9]*\.[0-9]*\.[0-9]*\).*\(<\/p>\s*<!--\s*EndReleaseHeader\s*-->\)/\1This is the continuous build for version \2. This version is based on the current content of <a href="https:\/\/github.com\/WorldHealthOrganization\/ddcc">https:\/\/github.com\/WorldHealthOrganization\/ddcc<\/a> and changes regularly.\3/' ./output/*.html
-
-      # deploy with output directory indicated by the tag or branch that triggered this workflow
-      - name: Deploy
-        uses: peaceiris/actions-gh-pages@v3
-        with:
-          github_token: ${{ secrets.GITHUB_TOKEN }}
-          publish_dir: ./output
-          destination_dir: ${{ github.ref }}
-          keep_files: true
-         #force_orphan: true
-
-      # if it is the main branch, deploy to main directory
-      - name: Deploy
-        uses: peaceiris/actions-gh-pages@v3
-        if: ${{ github.ref == 'refs/heads/main' || github.ref =='refs/heads/master' }} 
-        with:
-          github_token: ${{ secrets.GITHUB_TOKEN }}
-          publish_dir: ./output
-          keep_files: true
-         #force_orphan: true
-
-
-#      - name: 🚚 Get latest code
-#        uses: actions/checkout@v2.3.2
-