Update Dockerfile tor service init, refactor rc/ -> misc/

The tor service is now started by calling a script which runs tor
according to the current container user. If the user is root, the script
will begin the tor service as normal. Otherwise, it runs tor as the
current user. This primarily is meant to address the issue with Heroku
builds (which don't have a root user) not being able to start tor as a
service.

Also refactored the rc/ dir to misc/ (with a tor/ subdir) since that
makes more sense.

Dockerfile

@@ -7,7 +7,7 @@ RUN apt-get update && apt-get install -y \
     libssl-dev \
     tor
 
-COPY rc/torrc /etc/tor/torrc
+COPY misc/tor/torrc /etc/tor/torrc
 COPY requirements.txt .
 RUN pip install --no-cache-dir -r requirements.txt
 
@@ -40,4 +40,4 @@ COPY . .
 
 EXPOSE $EXPOSE_PORT
 
-CMD service tor start && ./run
+CMD misc/tor/start-tor.sh & ./run

misc/tor/start-tor.sh

@@ -0,0 +1,7 @@
+#!/bin/bash
+
+if [ "$(whoami)" != "root" ]; then
+    tor -f /etc/tor/torrc
+else
+    service tor start
+fi