feat: allow specifying external ip easily

daemon/Dockerfile

@@ -72,6 +72,10 @@ ENV RT_MAX_PEERS_SEED=80
 ENV RT_TRACKERS_WANT=80
 ENV RT_MEMORY_MAX="1800M"
 ENV RT_LOGLEVEL="info"
+# Set to automatically run this command on startup to set the external address
+ENV EXTERNAL_IP_CMD=""
+# Set to automatically set the external address
+ENV EXTERNAL_IP=""
 
 VOLUME ["/data"]
 VOLUME ["/tmp"]

daemon/entrypoint.sh

@@ -5,8 +5,13 @@ mkdir -p /tmp/.session
 echo > /tmp/rtorrent.log
 rm /tmp/.session/rtorrent.lock /tmp/.session/rtorrent.pid || true
 
-# Start rtorrent as a daemon with the setting in the config file
-# & to actually run it in the background
-rtorrent -n -o "import=/rtorrent.rc" &
+if [ -n "$EXTERNAL_IP_CMD" ]; then
+  EXTERNAL_IP=$(eval "$EXTERNAL_IP_CMD")
+fi
+if [ -n "$EXTERNAL_IP" ]; then
+  rtorrent -i "$EXTERNAL_IP" -n -o "import=/rtorrent.rc" &
+else
+  rtorrent -n -o "import=/rtorrent.rc" &
+fi
 
 tail -f /tmp/rtorrent.log