docker build . -t batting_average
docker run -it batting_average ruby calculate.rb --batting_file_path=data/Batting.csv --teams_file_path=data/Teams.csv
docker run -it batting_average ruby calculate.rb --batting_file_path=data/Batting.csv --teams_file_path=data/Teams.csv --filter-year=1991 --filter-team-name='New York Mets'
docker run -it batting_average rspec