Container has wrong mamba version

[zdk123]

Reproduce with:

docker pull mambaorg/micromamba:0.7.14
docker run mambaorg/micromamba:0.7.14 mamba --version
# 0.7.13

[wholtz]

Hi @zdk123, thanks for pointing this out and for the PR. There were a few other places in the repo where the version number needed to be updated in the documentation (see update.sh), so I didn't use your PR. The issue is fixed in 29d3859. It will take up to 6 hours for the builds on dockerhub to be updated. Our automatic build process needs to be altered or this same problem will happen again the next time micromamba has a new version released. I am making a new issue (#9) to track the problem with the automatic builds.