I've updated the Docker container to the latest source. It turns out that
compiling the source in a Tinycore container, copying back to host, finally
copying precompiled source back into a fresh container is the path to the
smallest image. Back down to 14MB including vim so that you can (edit
'mycoolvar) right in the image! Once I get a little time I'll write up an
article for the wiki explaining the process.
More detailed instructions at: