Confirm the installation
docker run -t -i -v %cd%:/data qiime2/core:2018.8 qiime
It happens that I get problem in Command Prompt that ‘qiime’ is not recognized while I was trying to go through “Moving Pictures” tutorial.
Are you running just qiime? If so, that error makes sense - you need to run this through the docker command, just like in step 2 you listed above. So, listing the cutadapt plugin for example would look like this:
docker run -t -i -v %cd%:/data qiime2/core:2018.8 qiime cutadapt --help