Pipeline Improvements

[amsnyder]

Compiling a list of pipeline improvements that could be made in the future, if time allows:

• Update Snakefile to run git submodule add to get river-dl code into 03b_model/src directory
• Use dask to distribute the work in fetch_coawst_model.py
• Set up a Docker container and push that image to dockerhub to run our pipeline in
• Get Docker container running on Tallgrass
• Get Snakemake/S3 connection working so inputs/outputs can come directly from S3
• Use snakemake inputs/outputs/params in python script instead of having them hardcoded in script
• Review Snakefiles for other improvements, based on information gained in Snakemake tutorial writing process