add docker files

docker/Dockerfile

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+FROM    python:3-alpine
+LABEL   maintainer="Thijs Eilander <[email protected]>"
+
+COPY    bootstrap.sh /bootstrap.sh
+
+RUN set -x; \
+        \
+	pip install --upgrade pip ;\
+        apk add --no-cache --virtual .build-deps \
+                git \
+        ;\
+	\
+	cd / ;\
+	/usr/bin/git clone https://github.com/Reloisback/Whiteout-Survival-Discord-Bot.git app ;\
+	cd /app ;\
+	echo 0 > bot_token.txt ;\
+	sh -c 'echo y' | python main.py 2>/dev/null ;\
+	rm bot_token.txt ;\
+	apk del .build-deps ;\
+	chmod +x /bootstrap.sh
+
+WORKDIR /app
+ENTRYPOINT ["/bootstrap.sh"]

docker/bootstrap.sh

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+#!/bin/sh
+
+echo "[WSDB] For more information please see https://github.com/Reloisback/Whiteout-Survival-Discord-Bot"
+
+cd /app
+
+
+if [ ! -n "${DISCORD_BOT_TOKEN}" ]; then
+	echo "please set DISCORD_BOT_TOKEN"
+	exit
+fi
+
+if [ -n "${DISCORD_BOT_TOKEN}" ]; then
+    echo "${DISCORD_BOT_TOKEN}" > bot_token.txt
+fi
+
+sh -c 'echo y' | python main.py

docker/docker-compose.py

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+  wos-discord-bot:
+    image: eilandert/whiteout-survival-discord-bot:v4
+    container_name: wos-discord-bot
+    volumes:
+      - /opt/docker/wos/db/:/app/db
+    restart: unless-stopped
+    environment:
+      - DISCORD_BOT_TOKEN=<your bot token here>