Use `WHOOGLE_TOR_SERVICE` to enable/disable bg Tor service

Allows skipping the Tor startup script if WHOOGLE_TOR_SERVICE is set to
0. This is separate from WHOOGLE_CONFIG_TOR, which only allows
enabling/disabling user configuration of passing searches through
Tor.

Closes #631

README.md

@@ -375,10 +375,11 @@ There are a few optional environment variables available for customizing a Whoog
 | WHOOGLE_ALT_MD       | The medium.com alternative to use when site alternatives are enabled in the config.       |
 | WHOOGLE_ALT_IMG      | The imgur.com alternative to use when site alternatives are enabled in the config.        |
 | WHOOGLE_ALT_WIKI     | The wikipedia.com alternative to use when site alternatives are enabled in the config.    |
-| WHOOGLE_AUTOCOMPLETE | Controls visibility of autocomplete/search suggestions. Default on -- use '0' to disable  |
+| WHOOGLE_AUTOCOMPLETE | Controls visibility of autocomplete/search suggestions. Default on -- use '0' to disable. |
 | WHOOGLE_MINIMAL      | Remove everything except basic result cards from all search queries.                      |
 | WHOOGLE_CSP          | Sets a default set of 'Content-Security-Policy' headers                                   |
 | WHOOGLE_RESULTS_PER_PAGE          | Set the number of results per page                                           |
+| WHOOGLE_TOR_SERVICE  | Enable/disable the Tor service on startup. Default on -- use '0' to disable.              |
 | WHOOGLE_TOR_USE_PASS | Use password authentication for tor control port. |
 | WHOOGLE_TOR_CONF | The absolute path to the config file containing the password for the tor control port. Default: ./misc/tor/control.conf WHOOGLE_TOR_PASS must be 1 for this to work.|
 

misc/tor/start-tor.sh

@@ -1,5 +1,10 @@
 #!/bin/sh
 
+if [ "$WHOOGLE_TOR_SERVICE" == "0" ]; then
+    echo "Skipping Tor startup..."
+    exit 0
+fi
+
 if [ "$(whoami)" != "root" ]; then
     tor -f /etc/tor/torrc
 else