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rocker-org / rocker-versioned

Run current & prior versions of R using docker
https://hub.docker.com/r/rocker/r-ver
GNU General Public License v2.0
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Reported image size does not match docker output #45

Closed jgbradley1 closed 7 years ago

jgbradley1 commented 7 years ago

This may be a misunderstanding on my part but when I run

docker pull rocker/rstudio:latest

the downloaded image is 1.06 GB instead of the expected 328.4 MB. Am I using the wrong image or what could be taking up so much space in the rstudio image? I was hoping to find a rstudio image that has just the standard R installation (with Rstudio) included in order to keep the image size small.

cboettig commented 7 years ago

The image sizes reported by Docker Hub and our badges refer to the size of the compressed download, (since users are usually more concerned about download size/times than disk space).

The rocker/rstudio image is a 344 MB download, though it's actually smaller still (113 MB) if you have already downloaded the previous image layers, debian:stretch (45 MB) and rocker/r-ver (185 MB), as you can see in this screenshot:

image

(The last two layers you see listed there are the docker COPy and default CMD layers that don't add more space)

The unpacked image size (e.g .as shown by docker images) is indeed about 1 GB. You should be able to see exactly what is on the images by looking at the Dockerfiles, it really is just a Debian base, a basic (though not absolutely minimal; e.g. has support to compile packages with source code etc) R instance plus RStudio and little else.

Hope this helps.