removed supervisord, using baseimage-docker init system. added automatic port updates.

transmission/periodicUpdates.sh

@@ -0,0 +1,8 @@
+#!/bin/bash
+
+while [ 1 ]
+do
+    sleep 1m
+    /etc/transmission-daemon/updatePort.sh
+    sleep 1m
+done

transmission/run.sh

@@ -0,0 +1,2 @@
+#!/bin/sh
+exec /usr/bin/transmission-daemon -f -g /etc/transmission-daemon/

transmission/runUpdates.sh

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+#!/bin/sh
+
+exec /etc/transmission-daemon/periodicUpdates.sh

transmission/transmissionSettings.json

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+{
+    "alt-speed-down": 50,
+    "alt-speed-enabled": false,
+    "alt-speed-time-begin": 540,
+    "alt-speed-time-day": 127,
+    "alt-speed-time-enabled": false,
+    "alt-speed-time-end": 1020,
+    "alt-speed-up": 50,
+    "bind-address-ipv4": "0.0.0.0",
+    "bind-address-ipv6": "::",
+    "blocklist-enabled": false,
+    "blocklist-url": "http://www.example.com/blocklist",
+    "cache-size-mb": 4,
+    "dht-enabled": true,
+    "download-dir": "/data/completed",
+    "download-limit": 100,
+    "download-limit-enabled": 0,
+    "download-queue-enabled": true,
+    "download-queue-size": 5,
+    "encryption": 1,
+    "idle-seeding-limit": 30,
+    "idle-seeding-limit-enabled": false,
+    "incomplete-dir": "/data/incomplete",
+    "incomplete-dir-enabled": true,
+    "lpd-enabled": false,
+    "max-peers-global": 200,
+    "message-level": 2,
+    "peer-congestion-algorithm": "",
+    "peer-id-ttl-hours": 6,
+    "peer-limit-global": 200,
+    "peer-limit-per-torrent": 50,
+    "peer-port": 51413,
+    "peer-port-random-high": 65535,
+    "peer-port-random-low": 49152,
+    "peer-port-random-on-start": false,
+    "peer-socket-tos": "default",
+    "pex-enabled": true,
+    "port-forwarding-enabled": false,
+    "preallocation": 1,
+    "prefetch-enabled": 1,
+    "queue-stalled-enabled": true,
+    "queue-stalled-minutes": 30,
+    "ratio-limit": 2,
+    "ratio-limit-enabled": false,
+    "rename-partial-files": true,
+    "rpc-authentication-required": false,
+    "rpc-bind-address": "0.0.0.0",
+    "rpc-enabled": true,
+    "rpc-password": "{425745bf3914984c2abcc013276f40e8fa5d84ecC5.df8oF",
+    "rpc-port": 9091,
+    "rpc-url": "/transmission/",
+    "rpc-username": "username",
+    "rpc-whitelist": "127.0.0.1",
+    "rpc-whitelist-enabled": false,
+    "scrape-paused-torrents-enabled": true,
+    "script-torrent-done-enabled": false,
+    "script-torrent-done-filename": "",
+    "seed-queue-enabled": false,
+    "seed-queue-size": 10,
+    "speed-limit-down": 100,
+    "speed-limit-down-enabled": false,
+    "speed-limit-up": 100,
+    "speed-limit-up-enabled": false,
+    "start-added-torrents": true,
+    "trash-original-torrent-files": false,
+    "umask": 2,
+    "upload-limit": 100,
+    "upload-limit-enabled": 0,
+    "upload-slots-per-torrent": 14,
+    "utp-enabled": true,
+    "watch-dir": "/data/watch",
+    "watch-dir-enabled": true
+}
+

transmission/updateTransmissionPort.sh

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+#/bin/bash
+
+# Settings
+PIA_PASSWD_FILE=/etc/openvpn/credentials.txt
+
+username=$(head -1 $PIA_PASSWD_FILE)
+passwd=$(tail -1 $PIA_PASSWD_FILE)
+local_vpn_ip=$(ip addr show tun0 | grep inet | awk '{ print $2 }')
+pia_client_id_file=/etc/transmission-daemon/pia_client_id
+transmission_settings_file=/etc/transmission-daemon/settings.json
+port_assignment_url=https://www.privateinternetaccess.com/vpninfo/port_forward_assignment
+
+#
+# First get a port from PIA
+#
+
+new_client_id() {
+    head -n 100 /dev/urandom | md5sum | tr -d " -" | tee $pia_client_id_file
+}
+
+pia_client_id="$(cat $pia_client_id_file 2>/dev/null)"
+if [[ -z "$pia_client_id" ]]; then
+     echo "Generating new client id for PIA"
+     pia_client_id=$(new_client_id)
+fi
+
+# Get the port
+pia_response=$(curl -d "user=$username&pass=$passwd&client_id=$pia_client_id&local_ip=$local_vpn_ip" $port_assignment_url)
+
+new_port=$(echo $pia_response | grep -oE "[0-9]+")
+echo "Got new port $new_port from pia"
+
+#
+# Now, set port in Transmission
+#
+
+# Check if transmission remote is set up with authentication
+auth_enabled=$(grep 'rpc-authentication-required\"' $transmission_settings_file | grep -oE 'true|false')
+if [[ "true" = "$auth_enabled" ]]
+  then
+    echo "transmission auth required"
+    myauth="--auth username:password"
+  else
+    echo "transmission auth not required"
+    myauth=""
+fi
+
+# get current listening port
+transmission_peer_port=$(transmission-remote $myauth -si | grep Listenport | grep -oE '[0-9]+')
+if [[ "$new_port" != "$transmission_peer_port" ]]
+  then
+    transmission-remote $myauth -p "$new_port"
+    echo "Checking port..."
+    sleep 10 && transmission-remote $myauth -pt
+  else
+    echo "No action needed, port hasn't changed"
+fi
+