diff --git a/.github/workflows/build.yml b/.github/workflows/make.yml
similarity index 56%
rename from .github/workflows/build.yml
rename to .github/workflows/make.yml
index 527183ff7..8937e441a 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/make.yml
@@ -1,7 +1,8 @@
 name: Build HPMOR PDFs and eBooks
 
-# Controls when the action will run. Triggers the workflow on push or pull request
-# events but only for the master branch
+# Controls when the action will run.
+# workflow_dispatch: manual triggering
+# push: triggers the workflow on push request events but only for the master branch
 on:  
   workflow_dispatch:    
   push: 
@@ -10,18 +11,18 @@ on:
 # A workflow run is made up of one or more jobs that can run sequentially or in parallel
 jobs:
   job1:
-    # runs-on: ubuntu-latest
-    runs-on: ubuntu-20.04
+    # runs-on: ubuntu-20.04
+    runs-on: ubuntu-latest
     steps:
 
 # Initialize
     - name: print start date
-      run: |
-        date +%Y-%m-%d_%H:%M
+      run: date +%Y-%m-%d_%H:%M
 
     - name: Checkout Repository
       uses: actions/checkout@v2
       with:
+        ref: master
         persist-credentials: false # otherwise, the token used is the GITHUB_TOKEN, instead of your personal token
         fetch-depth: 0 # otherwise, you will failed to push refs to dest repo
 
@@ -29,28 +30,39 @@ jobs:
       uses: actions/setup-python@v2
       with:
         python-version: '3.9'
-    
+
+    - name: test ls before
+      run: |
+        pwd
+        ls -l
+
+#    - name: Quality check of chapters for known issues
+#      run: python3 check-chapters.py
+
     - name: Install requirements
-      run: install_requirements.sh
+      run: sh install_requirements.sh
+
+    - name: Make PDFs
+      run: sh make_pdfs.sh
 
-# Build
-    - name: Build PDFs
-      run: ./make_pdfs.sh
+    - name: Make eBooks
+      run: sh make_ebooks.sh
 
-    - name: Build ebooks
-      run: ./make_ebooks.sh
+    - name: test ls after
+      run: |
+        pwd
+        ls -l
 
 # Publish to release       
     - name: Upload to release
       uses: softprops/action-gh-release@v1
       with:
-        tag_name: MyPrereleaseTag
+        tag_name: WorkInProgress
         prerelease: true
-        files: 
-          ./*.pdf
+        files: |
+          ./hpmor*.pdf
           ebook/output/hpmor.epub
           ebook/output/hpmor.mobi
 
     - name: print end date
-      run: |
-        date +%Y-%m-%d_%H:%M
+      run: date +%Y-%m-%d_%H:%M
diff --git a/cleanup.sh b/cleanup.sh
new file mode 100755
index 000000000..3187ab82d
--- /dev/null
+++ b/cleanup.sh
@@ -0,0 +1,4 @@
+#!/bin/sh
+
+latexmk -C
+rm -rf ebook/tmp
diff --git a/install_requirements.sh b/install_requirements.sh
old mode 100644
new mode 100755
diff --git a/make_ebooks.sh b/make_ebooks.sh
old mode 100644
new mode 100755
index 5394a7828..27dbe3778
--- a/make_ebooks.sh
+++ b/make_ebooks.sh
@@ -1,4 +1,4 @@
 #!/bin/sh
 
 cd ebook
-./1_latex2html.py && ./2_html2epub.sh
+python3 ./1_latex2html.py && sh ./2_html2epub.sh
diff --git a/make_pdfs.sh b/make_pdfs.sh
old mode 100644
new mode 100755
index 64f09c174..62d23bbbc
--- a/make_pdfs.sh
+++ b/make_pdfs.sh
@@ -1,10 +1,10 @@
 #!/bin/sh
 
-# TODO
-# latexmk hpmor
+latexmk hpmor
+
 latexmk hpmor-1
-# latexmk hpmor-2
-# latexmk hpmor-3
-# latexmk hpmor-4
-# latexmk hpmor-5
-# latexmk hpmor-6
+latexmk hpmor-2
+latexmk hpmor-3
+latexmk hpmor-4
+latexmk hpmor-5
+latexmk hpmor-6