Cookie auth (#116)

* Added new extras directory

* Automatically create cookie file on boot

* Added cookie file option to DL option builder

* Put cookie auth in correct spot

* Updated Docs

* Removed useless setter for config path

config/runtime.exs

@@ -41,16 +41,11 @@ config :pinchflat, Pinchflat.Repo,
   ]
 
 if config_env() == :prod do
-  config_path =
-    System.get_env("CONFIG_PATH") ||
-      raise """
-      environment variable CONFIG_PATH is missing.
-      For example: /etc/pinchflat/config
-      """
-
+  config_path = "/config"
   db_path = System.get_env("DATABASE_PATH", Path.join([config_path, "db", "pinchflat.db"]))
   log_path = System.get_env("LOG_PATH", Path.join([config_path, "logs", "pinchflat.log"]))
   metadata_path = System.get_env("METADATA_PATH", Path.join([config_path, "metadata"]))
+  extras_path = System.get_env("EXTRAS_PATH", Path.join([config_path, "extras"]))
 
   # We want to force _some_ level of useful logging in production
   acceptable_log_levels = ~w(debug info)a
@@ -65,7 +60,10 @@ if config_env() == :prod do
 
   config :pinchflat,
     yt_dlp_executable: System.find_executable("yt-dlp"),
+    media_directory: "/downloads",
     metadata_directory: metadata_path,
+    extras_directory: extras_path,
+    tmpfile_directory: Path.join([System.tmp_dir!(), "pinchflat", "data"]),
     dns_cluster_query: System.get_env("DNS_CLUSTER_QUERY")
 
   config :pinchflat, Pinchflat.Repo,