gitlab ci support

.Rbuildignore

@@ -10,3 +10,4 @@
 ^doc$
 ^tmp$
 ^notes$
+^\.gitlab-ci\.yml$

.gitlab-ci.yml

@@ -1,7 +1,7 @@
 image: rocker/rstudio  
 test:  
    script:
-    - R -e 'install.packages(c("ggplot2", "grid", "scales", "viridis"))'
+    - R -e 'install.packages(c("ggplot2", scales", "viridis", "knitr", "rmarkdown", "testthat", "RColorBrewer", "covr"))'
     - R CMD build . --no-build-vignettes --no-manual
     - PKG_FILE_NAME=$(ls -1t *.tar.gz | head -n 1)
     - R CMD check "${PKG_FILE_NAME}" --no-build-vignettes --no-manual