Would be nice to create a file with all of the packages used to create the Conda environment within the Docker container. This will be useful to recreate the same conda environment for downstream analysis in order to use the same tools (maybe add others), and hence adhere to reproducibility.

It should be as simple as translating and adding the command below into Docker language with the use of cookiecutter:
conda env export --name nf-core-atacseq-1.0.0 > nf-core-atacseq-1.0.0.yml