Dockerfile: add R-packages as dependencies and document Docker usage.

Dockerfile

@@ -2,6 +2,19 @@
 # Source for the docker image registry.forgemia.inra.fr/umr-astre/covid19-mortality
 # (c) 2020 Facundo Muñoz
 
+# Usage:
+# - Reproduce CI locally:
+#   sudo docker pull registry.forgemia.inra.fr/umr-astre/covid19-mortality
+#   sudo docker run -e PASSWORD=fmstudio -p 8787:8787 --rm -it -v $(pwd):/home/rstudio/covid19-mortality registry.forgemia.inra.fr/umr-astre/covid19-mortality  # Run from the project root dir.
+#   [browse to localhost:8787] username: rstudio, password: fmstudio
+#   drake::r_make()
+#
+# - Modify and update Docker image
+#   sudo docker build -t registry.forgemia.inra.fr/umr-astre/covid19-mortality .
+#   [test]
+#   sudo docker push registry.forgemia.inra.fr/umr-astre/covid19-mortality
+
+
 FROM rocker/geospatial
 
 LABEL maintainer="Facundo Muñoz facundo.munoz@cirad.fr"
@@ -81,7 +94,34 @@ unicode-math \
 xunicode
 
 # Install R-package dependencies for compiling reports
-RUN ["install2.r", "ade4", "Cairo", "countrycode", "drake", "furrr", "future.callr", "here", "hrbrthemes", "janitor", "knitr", "latticeExtra", "pacman", "readxl", "rjson", "rmarkdown", "rmdformats"]
+RUN ["install2.r", \
+"ade4", \
+"Cairo", \
+"countrycode", \
+"cowplot", \
+"distill", \
+"downloader", \
+"drake", \
+"furrr", \
+"future.callr", \
+"gratia", \
+"here", \
+"hrbrthemes", \
+"janitor", \
+"kableExtra", \
+"knitr", \
+"latticeExtra", \
+"mvnfast", \
+"NCmisc", \
+"pacman", \
+"patchwork", \
+"proftools", \
+"reader", \
+"readxl", \
+"rjson", \
+"rmarkdown", \
+"rmdformats" \
+]
 
 ## Only needed with the option fig_crop
 ## which gives issues with device Cairo