ci: use Bioconductor docker and disable R installation

.github/workflows/pkgdown.yaml

@@ -16,6 +16,7 @@ permissions: read-all
 jobs:
   pkgdown:
     runs-on: ubuntu-latest
+    container: bioconductor/bioconductor_docker:RELEASE_3_19
     # Only restrict concurrency for non-PR jobs
     concurrency:
       group: pkgdown-${{ github.event_name != 'pull_request' || github.run_id }}
@@ -24,11 +25,16 @@ jobs:
     permissions:
       contents: write
     steps:
-      - uses: actions/checkout@v4
+      - name: Checkout package
+        uses: actions/checkout@v4
 
-      - uses: r-lib/actions/setup-pandoc@v2
+      - name: Setup pandoc from r-lib
+        if: runner.os != 'Linux'
+        uses: r-lib/actions/setup-pandoc@v2
 
-      - uses: r-lib/actions/setup-r@v2
+      - name: Setup R from r-lib
+        if: runner.os != 'Linux'
+        uses: r-lib/actions/setup-r@v2
         with:
           use-public-rspm: true
 
@@ -37,7 +43,9 @@ jobs:
           extra-packages: any::pkgdown, local::.
           needs: website
 
-      - uses: r-lib/actions/setup-tinytex@v2
+      - name: Setup tinytex from r-lib
+        if: runner.os != 'Linux'
+        uses: r-lib/actions/setup-tinytex@v2
 
       - name: Build site
         run: pkgdown::build_site_github_pages(new_process = FALSE, install = FALSE)