allow internal port change

code/entrypoint.sh

@@ -4,6 +4,7 @@ SQLITE=sqlite3
 
 export FLASK_DATAFOLDER="/data"
 export FLASK_DB="/data/flees.db"
+export INTERNAL_PORT="${INTERNAL_PORT:-5000}"
 export SERVER=gunicorn
 export PID="flees.pid"
 export WORKERS
@@ -23,6 +24,6 @@ exec "$SERVER" \
     -w $WORKERS \
     --timeout $TIMEOUT \
     --pid="$PID" \
-    -b 0.0.0.0:5000 \
+    -b 0.0.0.0:$INTERNAL_PORT \
     'app:app' \
     2>&1 | tee -a /data/flees.log