Add Docker support to simplify deployment

.env.example

@@ -1,45 +1,51 @@
 # Discord-related info
-XIAO_TOKEN=
+XIAO_TOKEN=your_discord_bot_token
 # Separate OWNERS with a ,
-OWNERS=
+OWNERS=123456789012345678
 LOVER_USER_ID=
-XIAO_PREFIX=
-INVITE=
+XIAO_PREFIX=!
+INVITE=https://discord.gg/your-server
 REPORT_CHANNEL_ID=
 JOIN_LEAVE_CHANNEL_ID=
 
 # Redis info
-REDIS_HOST=
-REDIS_PASS=
+# For docker-compose, keep REDIS_HOST=redis
+REDIS_HOST=redis
+REDIS_PASS=change_me_redis_password
+
+# Runtime
+TZ=UTC
+# Folder used to persist bot state files in Docker
+XIAO_STATE_DIR=/data
 
 # Emoji IDs
 SUCCESS_EMOJI_ID=
 FAILURE_EMOJI_ID=
 GOLD_FISH_EMOJI_ID=
-GOLD_FISH_EMOJI_NAME=
+GOLD_FISH_EMOJI_NAME=Gold Fish
 MOCKING_EMOJI_ID=
 MOCKING_EMOJI_NAME=
 SILVER_FISH_EMOJI_ID=
-SILVER_FISH_EMOJI_NAME=
+SILVER_FISH_EMOJI_NAME=Silver Fish
 PORTAL_EMOJI_ID=
-PORTAL_EMOJI_NAME=
+PORTAL_EMOJI_NAME=PORTAL
 LOADING_EMOJI_ID=
 MEGA_EVOLVE_EMOJI_ID=
-MEGA_EVOLVE_EMOJI_NAME=
+MEGA_EVOLVE_EMOJI_NAME=MEGA
 NAME_RATER_EMOJI_ID=
 NAME_RATER_EMOJI_NAME=
 
 # API Keys, IDs, and Secrets
-ANILIST_USERNAME=
-BITLY_KEY=
-CLEVERBOT_KEY=
-GITHUB_ACCESS_TOKEN=
-GOV_KEY=
-IDIOT_URL=
-REMOVEBG_KEY=
-SAUCENAO_KEY=
-THECATAPI_KEY=
-THEDOGAPI_KEY=
-WEBSTER_KEY=
-XIAO_GITHUB_REPO_NAME=
-XIAO_GITHUB_REPO_USERNAME=
+ANILIST_USERNAME=AniList
+BITLY_KEY=your_bitly_key
+CLEVERBOT_KEY=your_cleverbot_key
+GITHUB_ACCESS_TOKEN=your_github_token
+GOV_KEY=your_nasa_api_key
+IDIOT_URL=https://en.wikipedia.org/wiki/Idiot
+REMOVEBG_KEY=your_removebg_key
+SAUCENAO_KEY=your_saucenao_key
+THECATAPI_KEY=your_thecatapi_key
+THEDOGAPI_KEY=your_thedogapi_key
+WEBSTER_KEY=your_webster_key
+XIAO_GITHUB_REPO_NAME=xiao
+XIAO_GITHUB_REPO_USERNAME=xiaobotdev