add docker deployment files

.dockerignore

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+data/

Dockerfile

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+FROM python:3-alpine
+
+COPY . /app
+WORKDIR /app
+
+VOLUME /app/data
+
+RUN \
+    echo "**** install build packages ****" && \
+    apk add --no-cache --virtual=build-dependencies \
+        g++ \
+        git \
+        gcc \
+        libxml2-dev \
+        libxslt-dev \
+        openssl-dev \
+        python3-dev && \
+    echo "**** install runtime packages ****" && \
+    apk add --no-cache \
+        openssl \
+        py3-lxml \
+        py3-pip \
+        python3 && \
+    echo "**** install pip packages ****" && \
+    pip3 install -U pip setuptools wheel && \
+    pip3 install -r requirements.txt && \
+    echo "**** clean up ****" && \
+    apk del --purge \
+        build-dependencies && \
+    rm -rf \
+        /root/.cache \
+        /tmp/* \
+        /var/cache/apk/* && \
+    echo "**** prepare scripts ****" && \
+    chmod +x docker-run.sh
+
+CMD ["sh", "docker-run.sh", "--pass-errors"]

docker-compose.yml

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+version: '3'
+services:
+    bot:
+        image: "classabbyamp/discord-qrm-bot:latest"
+        container_name: "qrmbot"
+        volumes:
+            - "./data:/app/data:rw"

docker-run.sh

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+#!/bin/bash
+
+# A wrapper script for painless discord bots.
+# v1.0.0
+# Copyright (c) 2019 0x5c
+# Released under the terms of the MIT license.
+# Part of:
+# https://github.com/0x5c/quick-bot-no-pain
+
+
+# Argument handling     # ? TODO: Argument passing ?
+if [[ $1 == '--pass-errors' ]]; then 
+    _PASS_ERRORS=1
+fi
+
+
+# A function called when the bot exits to decide what to do
+code_handling() {
+    case $err in
+        0)
+            echo "$_message: exiting"
+            exit 0      # The bot whishes to stay alone.
+            ;;
+        42)
+            echo "$_message: restarting"
+            return      # The bot whishes to be restarted (returns to the loop).
+            ;;
+        *)
+            if [[ $_PASS_ERRORS -eq 0 ]]; then    # The bot crashed and:
+                echo "$_message: restarting"
+                return      # ...we should return to the loop to restart it.
+            else
+                echo "$_message: exiting (--pass-errors)"
+                exit $err   # ...we should just exit and pass the code to our parent (probably a daemon/service manager).
+            fi
+            ;;
+    esac
+}
+
+
+echo "$0: Starting bot..."
+
+# The loop
+while true; do
+    python3 main.py
+    err=$?
+    _message="$0: The bot exited with [$err]"
+    code_handling
+done