install missing requirements

.gitlab-ci.yml

@@ -2,8 +2,9 @@ pages:
   stage: deploy
   image: rocker/rstudio
   script:
+    - Rscript requirements.R
     - quarto render ./
-    - mv _site/* public/
+    - mv _site/* public/   # gitlab pages should be stored in 'public' directory
   artifacts:
     paths:
       - public

requirements.R

+# manage R packages with pacman R package
+if(!requireNamespace("pacman", quietly = TRUE)) install.packages("pacman")
+
+# requirements
+pkg_list <- c(
+    "jsonlite",   # gitlab CI complains that the package is missing
+    "rmarkdown"   # gitlab CI complains that the package is missing
+)
+
+# install
+pacman::p_load(char = pkg_list)
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