Add tor relay fragment (#190)

* Add tor relay fragment

* remove extra ,

* use same tor container for relay

* remove \ns

* use own container for tor relay because of https://trac.torproject.org/projects/tor/ticket/8742

* be explicit with ports

* fix container name

* fix duplicate config

* fix config clash

* do not set daemon config item

* add info about tor requirements and legal implications

docker-compose-generator/docker-fragments/opt-add-tor-relay.yml

@@ -0,0 +1,33 @@
+version: "3"
+services:
+  tor-relay-gen:
+    restart: unless-stopped
+    image: btcpayserver/docker-gen:0.7.6
+    container_name: tor-relay-gen
+    volumes:
+      - "/var/run/docker.sock:/tmp/docker.sock:ro"
+      - "./torrc-relay.tmpl:/etc/docker-gen/templates/torrc.tmpl:ro"
+      - "tor_relay_torrcdir:/usr/local/etc/tor"
+    entrypoint: /usr/local/bin/docker-gen -notify-sighup tor-relay -watch -wait 5s:30s /etc/docker-gen/templates/torrc.tmpl /usr/local/etc/tor/torrc-2
+    links:
+      - tor-relay
+    environment:
+      TOR_RELAY_NICKNAME: ${TOR_RELAY_NICKNAME}
+      TOR_RELAY_EMAIL: ${TOR_RELAY_EMAIL}
+        
+  tor-relay:
+    restart: unless-stopped
+    image: btcpayserver/tor:0.4.1.5
+    container_name: tor-relay
+    environment:
+      TOR_PASSWORD: btcpayserver
+      TOR_ADDITIONAL_CONFIG: /usr/local/etc/tor/torrc-2
+    volumes:
+      - "tor_relay_datadir:/home/tor/.tor"
+      - "tor_relay_torrcdir:/usr/local/etc/tor"
+    ports: 
+      - "9001:9001"
+      - "9030:9030" 
+volumes:
+  tor_relay_datadir:
+  tor_relay_torrcdir: