fix(create_fairify): dependency installation issues and add check

inst/.gitlab-ci.yml

@@ -19,13 +19,23 @@ before_script:
   - mkdir -p $R_LIBS_USER
   - echo "R_LIBS='$R_LIBS_USER'" > .Renviron
   - R -q -e 'if (!require(remotes)) install.packages("remotes")'
-  - R -q -e 'remotes::install_deps(dep = T)'
+  - R -q -e 'remotes::install_deps(dependencies = TRUE)'
+
+check:
+  variables:
+    NOT_CRAN: "true"
+  stage: checks
+  allow_failure: true
+  script:
+    - R -q -e 'remotes::update_packages("rcmdcheck")'
+    - R -q -e 'rcmdcheck::rcmdcheck(args = "--no-manual", error_on = "error")'
 
 pages:
   stage: deploy
   rules:
     - if: $CI_COMMIT_REF_NAME == $CI_DEFAULT_BRANCH
   script:
+    - R -q -e 'devtools::install(dependencies = TRUE)'
     - R -q -e 'fairify::build_site()'
   artifacts:
     paths: