Ruby on nano server is a dynamic, reflective, object-oriented, general-purpose, open-source programming language.
The microsoft/nanoserver base image has a small footprint, but does not include graphics libraries or the .NET Framework. The 7-Zip utility and Chocolatey package manager don't currently work on Nano because they require .NET. Further, most EXE installers and all MSI installers don't work on Nano. The microsoft/windowscoreserver has none of these issues, but the footprint is ten times larger.
+-----------------------------------+ REPOSITORY SIZE
| FROM microsoft/windowsservercore | microsoft/windowsservercore 10.20 GB
+-----------------------------------+ windowsservercore-ruby 10.80 GB
| Install rb to C:\Ruby22_x64 |
| Install dk to C:\DevKit | |
+----------------------|---|--------+
| |
+----------------------|---|--------+ REPOSITORY SIZE
| FROM microsoft/nanoserver | microsoft/nanoserver 1.02 GB
+----------------------|---|--------+ nanoserver-ruby 1.52 GB
| Copy files | | |
| C:\DevKit <--+ | |
| C:\Ruby22_x64 <------+ |
| Setup the environment |
+-----------------------------------+
Fortunately, multi-stage build is the perfect solution. We can install everyting into a microsoft/windowscoreserver container, and then copy the bits we need into a microsoft/nanoserver container. The nanoserver-ruby image is small and should work fine for most applications, but we can always fall back to using the windowscoreserver-ruby image as long as we have ample resources.
Docker for Window Community Edition has no support for sharing host volumes, so using multi-stage build to copy files between containers is the obvious solution.