Change how docker-compose maps volumes

Only a handful of locations are shared with the docker-compose file,
instead of the entire directory, to prevent build files from being
overwritten by root.

Signed-off-by: Alek Ratzloff <alekratz@gmail.com>

lib/contrib/markov/markov.ex

@@ -4,7 +4,7 @@ defmodule Omnibot.Contrib.Markov do
   require Logger
 
   @default_config [
-    save_dir: "markov",
+    save_dir: "data/markov",
     order: 2,
     save_every: 5 * 60,
     ignore: [],

lib/contrib/wordbot/wordbot.ex

@@ -3,7 +3,7 @@ defmodule Omnibot.Contrib.Wordbot do
   alias Omnibot.{Contrib.Wordbot, Irc, Util}
   require Logger
 
-  @default_config wordbot_source: "words.txt", wordbot_db: "wordbot.db", words_per_round: 300, hours_per_round: 5, ignore: []
+  @default_config wordbot_source: "data/wordbot/words.txt", wordbot_db: "data/wordbot/wordbot.db", words_per_round: 300, hours_per_round: 5, ignore: []
 
   @impl true
   def children(cfg) do