Add build files for several containers containing networking software

build/runit/gmrender

@@ -0,0 +1,7 @@
+#!/bin/sh
+set -e
+if [ -z "$GMRENDER_NAME" ]; then
+    /usr/local/bin/gmediarender
+else
+    /usr/local/bin/gmediarender -f $GMRENDER_NAME
+fi

build/runit/minidlna

@@ -0,0 +1,8 @@
+#!/bin/sh
+if [ ! -f $MINIDLNA_CONFIG ]; then
+    mkdir -p `dirname $$MINIDLNA_CONFIG`
+    cp /opt/minidlna-$MINIDLNA_VERSION/minidlna.conf $MINIDLNA_CONFIG
+fi
+mkdir -p `dirname $MINIDLNA_LOG`
+mkdir -p $MINIDLNA_DATA
+/usr/local/sbin/minidlnad -d -f $MINIDLNA_CONFIG >> $MINIDLNA_LOG

build/runit/upnpproxy

@@ -0,0 +1,6 @@
+#!/bin/sh
+if [ ! -f $UPNPPROXY_CONFIG ]; then
+    mkdir -p `dirname $UPNPPROXY_CONFIG`
+     cp /opt/upnpproxy/doc/upnpproxy.conf $UPNPPROXY_CONFIG
+fi
+upnpproxy -C $UPNPPROXY_CONFIG