.env 파일을 gitignore에 추가
DockerAlias 오류 수정

- Production 환경에서 클래스를 찾을수 없어서 발생하는 오류 수정
Docker 배포에 대한 README 수정
Merge pull request #23 from seapy/master

DockerAlias 오류 수정 및 README 수정