Add Versions.md to the wiki

[eitsupi]

Related to #201

Now that #328 has been merged, we can generate a table to see the list of configuration values for each version, like https://github.com/rocker-org/rocker-versioned/blob/master/VERSIONS.md
I think it would be useful if this could be registered in the wiki and automatically updated.

Screen shot

Versions.md

sidebar

ToDo

• Add sidebar of the wiki
• Update the job to update wiki
• Update build/README.md (About the disappearance of the corresponding version from Versions.md when the stackfile is deleted)

[behrica]

I am just trying a Dockerfile with simply having:

FROM rocker/rstudio:4.0.3
RUN Rscript -e 'install.packages(c("httr","rlist","dplyr","purrr","stringr","AzureTableStor","lubridate","uuid"))'
RUN Rscript -e 'install.packages(c("rjson","tidyr"))'

and I get some unexpected warnings: that packages were compiled with R 4.0.5 (while the image tag I use is 4.0.3).
This seems strange to me.

Additionally the date in the repository is "not matching" your table above:

getOption("repos")
                                                                CRAN 
"https://packagemanager.rstudio.com/cran/__linux__/focal/2021-02-17" 

Is this expected ?

[eitsupi]

Yes, that's one of the reasons I'm keeping this PR in draft.

As you found, the CRAN mirror for that container images are dated differently than the original rule, the Dockerfile fix was implemented half a month ago (#328) and no container image built with the modified Dockerfile has been pushed yet.
Therefore, the containers currently used by the users do not match this document.

The current build system is such that Docker images containing older R versions will be built at the time of the new R release, so the documentation will match the actual state in a few months when R4.1.3? is released.

[eitsupi]

https://www.rocker-project.org/use/extending/

You may find this page helpful. For example, if you build an image from the following Dockerfile, you can modify CRAN and install the package.

FROM rocker/rstudio:4.0.3

RUN echo 'options(repos = c(CRAN = "https://packagemanager.rstudio.com/cran/__linux__/focal/2021-02-11"))' >> ${R_HOME}/etc/Rprofile.site

RUN install2.r --error --skipinstalled --ncpus -1 httr rlist dplyr purrr stringr AzureTableStor lubridate uuid rjson tidyr

[eitsupi]

I'm done editing, but for the next few months (until the release of R4.1.3) the CRAN dates will continue to be inconsistent between this document and the container images we can pull from DockerHub, so do you think it might be better not to merge until the release of R4.1.3?

[eitsupi]

I will merge this when R 4.1.3 is released.