patch 8.2.3909: Containerfile using prefix name not recognized

Problem:    Containerfile using prefix name not recognized.
Solution:   Recognize Containerfile.*.
diff --git a/src/version.c b/src/version.c
index 64086c3..62b646c 100644
--- a/src/version.c
+++ b/src/version.c
@@ -750,6 +750,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    3909,
+/**/
     3908,
 /**/
     3907,