Docker section issue with $HOME path

[chriswyatt1]

I cannot mount the $HOME correctly, so I do not get the output saved to "transcript-index".

This is the original line (that works fine on a local machine)

docker run --volume $HOME:$HOME --workdir $PWD my-image
salmon index -t $PWD/data/ggal/transcriptome.fa -i transcript-index
and this works for gitpod:

docker run --volume /workspace/Gitpod_test:/workspace/Gitpod_test my-image \
salmon index -t /workspace/Gitpod_test/data/ggal/transcriptome.fa -i transcript-index
except the expected output folder is not present