Update debug images to use ENV Variables

Missed in commit aeb7119

Author: mtscout6

NodeChromeDebug/entry_point.sh

@@ -23,7 +23,7 @@ sudo -E -i -u seluser \
   xvfb-run --server-args="$DISPLAY -screen 0 $GEOMETRY -ac +extension RANDR" \
   java -jar /opt/selenium/selenium-server-standalone.jar \
     -role node \
-    -hub http://hub:4444/grid/register \
+    -hub http://$HUB_PORT_4444_TCP_ADDR:$HUB_PORT_4444_TCP_PORT/grid/register \
     -nodeConfig /opt/selenium/config.json &
 NODE_PID=$!
 

NodeFirefoxDebug/entry_point.sh

@@ -23,7 +23,7 @@ sudo -E -i -u seluser \
   xvfb-run --server-args="$DISPLAY -screen 0 $GEOMETRY -ac +extension RANDR" \
   java -jar /opt/selenium/selenium-server-standalone.jar \
     -role node \
-    -hub http://hub:4444/grid/register \
+    -hub http://$HUB_PORT_4444_TCP_ADDR:$HUB_PORT_4444_TCP_PORT/grid/register \
     -nodeConfig /opt/selenium/config.json &
 NODE_PID=$!