fix the tinyproxy start script

tinyproxy/start.sh

@@ -1,42 +1,46 @@
-#!/bin/bash
+#!/bin/sh
+
+# Source our persisted env variables from container startup
+. /etc/transmission/environment-variables.sh
 
 PROXY_CONF='/etc/tinyproxy.conf'
+DEFAULT_PORT=8888
 
-if [ "${WEBPROXY_ENABLED}" = "true" ]; then
-
-  echo "STARTING TINYPROXY"
-
-  if [ -z "$WEBPROXY_PORT" ] ; then
-    set_port $WEBPROXY_PORT
-  else
-    # Always default back to port 8888
-    set_port 8888
-  fi
-
-  /etc/init.d/tinyproxy start
-  echo "Tinyproxy startup script complete."
-
-fi
-
-
-set_port () {
-
-  re='^[0-9]+$'
-  if ! [[ $1 =~ $re ]] ; then
-    echo "Port: Not a number" >&2; exit 1
+set_port()
+{
+  expr $1 + 0 1>/dev/null 2>&1
+  statut=$?
+  if test $statut -gt 1
+  then
+    echo "Port [$1]: Not a number" >&2; exit 1
   fi
 
   # Port: Specify the port which tinyproxy will listen on.  Please note
   # that should you choose to run on a port lower than 1024 you will need
   # to start tinyproxy using root.
 
-  if [ $1 \< 1024 ];
-  then 
+  if test $1 -lt 1024
+  then
     echo "tinyproxy: $1 is lower than 1024. Ports below 1024 are not permitted.";
     exit 1
-  fi;
+  fi
 
   echo "Setting tinyproxy port to $1";
-  sed -i -e"s,^Port .*,Port $1," $PROXY_CONF
-
+  sed -i -e"s,^Port .*,Port $1," $2
 }
+
+if [ "${WEBPROXY_ENABLED}" = "true" ]; then
+
+  echo "STARTING TINYPROXY"
+
+  if [ -z "$WEBPROXY_PORT" ] ; then
+    set_port ${WEBPROXY_PORT} ${PROXY_CONF}
+  else
+    # Always default back to port 8888
+    set_port ${DEFAULT_PORT} ${PROXY_CONF}
+  fi
+
+  /etc/init.d/tinyproxy start
+  echo "Tinyproxy startup script complete."
+
+fi