GHA rhub workflow: use .Rprofile to set options(repos)

Author: florisvdh

.github/workflows/rhub.yaml

@@ -52,6 +52,10 @@ jobs:
 
     steps:
       - uses: r-hub/actions/checkout@v1
+      - name: Add additional r-universe repository
+        run: |
+          # Add additional r-universe repository
+          echo 'options(repos = c(getOption("repos"), "https://geocompr.r-universe.dev"))' >> ~/.Rprofile
       - uses: r-hub/actions/platform-info@v1
         with:
           token: ${{ secrets.RHUB_TOKEN }}
@@ -84,8 +88,7 @@ jobs:
       - name: Add additional r-universe repository
         run: |
           # Add additional r-universe repository
-          options(repos = c(getOption("repos"), "https://geocompr.r-universe.dev"))
-        shell: Rscript {0}
+          echo 'options(repos = c(getOption("repos"), "https://geocompr.r-universe.dev"))' >> ~/.Rprofile
       - uses: r-hub/actions/platform-info@v1
         with:
           token: ${{ secrets.RHUB_TOKEN }}