Stop supporting docker

docker/Dockerfile

-FROM base/archlinux
-
-MAINTAINER Aya Morisawa
-
-RUN rm /etc/pacman.d/mirrorlist
-RUN echo 'Server = http://ftp.jaist.ac.jp/pub/Linux/ArchLinux/$repo/os/$arch'    >> /etc/pacman.d/mirrorlist
-RUN echo 'Server = http://ftp.tsukuba.wide.ad.jp/Linux/archlinux/$repo/os/$arch' >> /etc/pacman.d/mirrorlist
-
-RUN rm /etc/localtime
-RUN ln -s /usr/share/zoneinfo/Asia/Tokyo /etc/localtime
-
-RUN pacman -Sy --noconfirm
-RUN pacman -S --noconfirm pacman
-RUN pacman-db-upgrade
-RUN pacman -S --noconfirm archlinux-keyring
-RUN pacman -Syyu --noconfirm
-RUN pacman -S --noconfirm git nodejs npm mongodb redis
-
-COPY misskey.sh /root/misskey.sh
-RUN chmod u+x /root/misskey.sh
-
-EXPOSE 80
-EXPOSE 443
-EXPOSE 27017
-
-CMD ["/root/misskey.sh"]

docker/misskey.sh

-#!/bin/sh
-redis-server --daemonize yes
-mongod > /dev/null &
-cd /root/misskey
-npm start
-tail -f /dev/null

docs/docker.en.md

-Setup with Docker :whale:
-================================================================
-
-Ensure that the working directory is the repository root directory.
-
-To create misskey image:
-``` console
-$ sudo docker build -t misskey ./docker
-```
-
-To run misskey:
-``` console
-$ sudo docker run --rm -i -t -p $PORT:80 -v $(pwd):/root/misskey -v $DBPATH:/data/db misskey
-```
-
-where `$PORT` is the port used to access Misskey Web from host browser
-and `$DBPATH` is the path of MongoDB database on the host for data persistence.
-
-ex:
-``` console
-$ sudo docker run --rm -i -t -p 80:80 -v $(pwd):/root/misskey -v /data/db:/data/db misskey
-```
-
-If you want to run misskey in production mode, add `--env NODE_ENV=production` like this:
-``` console
-$ sudo docker run --rm -i -t -p 80:80 -v $(pwd):/root/misskey -v /data/db:/data/db --env NODE_ENV=production misskey
-```
-
-Note that `$(pwd)` is the working directory.