use run image (#576)

Co-authored-by: Mohamed Koubaa <koubaa@github.com>

.github/workflows/ci_cd.yml

@@ -69,7 +69,7 @@ jobs:
 
   doc:
     name: "Documentation build"
-    runs-on: public-ubuntu-latest-8-cores
+    runs-on: ubuntu-latest
     needs: [doc-style]
     steps:
       - name: "Checkout project"
@@ -110,25 +110,19 @@ jobs:
           docker pull ghcr.io/ansys/ls-pre:latest
           docker run -d --name kw_server -p 50051:50051 ghcr.io/ansys/ls-pre:latest && echo "Keyword server active on port 50051."
 
-      - name: Build local LS-DYNA Solver runner image
+      - name: Pull PyDyna-run image
         run: |
-          cd docker/run
-          docker build . -t dyna_run \
-             --build-arg LSTC_LICENSE=ansys \
-             --build-arg ANSYSLI_SERVERS=2325@${{secrets.LICENSE_SERVER}} \
-             --build-arg ANSYSLMD_LICENSE_FILE=1055@${{secrets.LICENSE_SERVER}}
-          docker image ls
-          cd ../..
+          docker pull ghcr.io/ansys/pydyna-run:latest
 
       - name: "Build the html documentation"
         env:
-          PYDYNA_RUN_CONTAINER: dyna_run:latest
+          PYDYNA_RUN_CONTAINER: ghcr.io/ansys/pydyna-run:latest
         run: |
           xvfb-run make -C doc html
 
       - name: "Build the pdf documentation"
         env:
-          PYDYNA_RUN_CONTAINER: dyna_run:latest
+          PYDYNA_RUN_CONTAINER: ghcr.io/ansys/pydyna-run:latest
         run: |
           make -C doc pdf