🔧 Updated some env vars

docker-compose.env

@@ -1,15 +1,21 @@
+# your machine's hostname, in the example below it is ghost
 UNDERLYING_HOSTNAME=ghost
+
+# COMIC_DIRECTORY is where your comics reside
 COMICS_DIRECTORY=/Users/rishi/work/threetwo/comics
+
+# USERDATA_DIRECTORY is used by ThreeTwo to generate covers, and temporary files
 USERDATA_DIRECTORY=/Users/rishi/work/threetwo/userdata
 
+# Your ComicVine API key
 COMICVINE_API_KEY=foobar
 
-
+# DO NOT TOUCH THESE!
 LOGGER=true
 LOGLEVEL=info
 SERVICEDIR=dist/services
 
-UNRAR_BIN_PATH=
+UNRAR_BIN_PATH=/usr/bin/unrar
 MONGO_URI=mongodb://db:27017/threetwo
 REDIS_URI=redis://redis:6379
 TRANSPORTER=redis://redis:6379