CI: Use xvfb for headless pyvista runs

Author: florian-wagner

.github/workflows/main.yml

@@ -13,7 +13,10 @@ jobs:
     name: Building pgcore & bindings
     runs-on: self-hosted
     steps:
-      - uses: actions/checkout@v4
+      - name: Clean-up
+        run: rm -rf ~/.cache/pygimli
+      - name: Getting pyGIMLi sources
+        uses: actions/checkout@v4
         with:
           fetch-depth: 0 # checks out all branches and tags
           path: source
@@ -48,12 +51,14 @@ jobs:
       env:
         DISPLAY: ":99.0"
         PYVISTA_OFF_SCREEN: True
+        OPENBLAS_CORETYPE: "ARMV8" # current bug in OpenBlas core detection
       steps:
-        - name: Set up headless display
-          uses: pyvista/setup-headless-display-action@v2
+        - name: Clean gallery
+          working-directory: build
+          run: make clean-gallery
         - name: Running sphinx
           working-directory: build
-          run: make doc
+          run: xvfb-run make doc # xvfb is necessary for headless display of pyvista plots
   merging:
     name: Merging dev into master
     runs-on: self-hosted
@@ -66,6 +71,14 @@ jobs:
           type: now
           target_branch: master
           github_token: ${{ secrets.GITHUB_TOKEN }}
-    
+  upload-html:
+    name: Upload HTML to dev.pygimli.org
+    runs-on: self-hosted
+    needs: docs
+    if: github.ref == 'refs/heads/dev' # Only merge from dev
+    steps:
+      - name: Merge into master
+        working-directory: build
+        run: rsync -avP --delete doc/html ~/dev.pygimli.org