Update gitlab-CI workflow for pkgdown.

Author: jonathan-g

.gitlab-ci.yml

@@ -17,6 +17,7 @@ pages:
   dependencies:
     - test
   script:
+    - Rscript -e 'devtools::install(".")'
     - Rscript -e 'pkgdown::build_site(preview = FALSE, new_process = TRUE, devel = FALSE, install = TRUE, override = list(destination = "public"))'
   artifacts:
     paths: