Add Dockerfile.archlinux

[elderica]

Summary

This pull request introduce Dockerfile for testing in cleaner environment.

Feature

• Arch Linux based image
• Use SBCL 2.3.7

How to use

# Compile SBCL from source and import contents in cl-waffe2 repository.
$ sudo docker build -f Dockerfile.archlinux -t cl-waffe2:latest .

# Invoke make in container.
$ sudo docker run -it --rm cl-waffe2:latest
$ sudo docker run -it --rm cl-waffe2:latest test
$ sudo docker run -it --rm cl-waffe2:latest rlrepl

Bug

Unable to connect to server process in Docker container.

$ sudo docker run -it --rm -p 40050:4005 cl-waffe2:latest slime
$ sudo docker run -it --rm -p 40050:4005 cl-waffe2:latest slynk