Remove Docker-related files

They have been moved to https://github.com/thelounge/docker-lounge.

Dockerfile

@@ -1,25 +0,0 @@
-#
-# Thanks to @Xe for the Dockerfile template
-# https://github.com/Shuo-IRC/Shuo/pull/87/files
-#
-
-FROM node:4.0-onbuild
-
-# Create a non-root user for lounge to run in.
-RUN useradd --create-home lounge
-
-# Needed for setup of Node.js
-ENV HOME /home/lounge
-
-# Customize this to specify where The Lounge puts its data.
-# To link a data container, have it expose /home/lounge/data
-ENV LOUNGE_HOME /home/lounge/data
-
-# Expose HTTP
-EXPOSE 9000
-
-# Drop root.
-USER lounge
-
-# Don't use an entrypoint here. It makes debugging difficult.
-CMD node index.js --home $LOUNGE_HOME

docker-compose.yml

@@ -1,4 +0,0 @@
-lounge:
-  build: .
-  ports:
-    - "9000:9000"