Merge pull request #31552 from aswind7/patch-2

fix dockerfile name

contrib/docker/frontend-with-nginx/Dockerfile.dockerbuild

@@ -6,7 +6,7 @@
 
 # This dockerfile also performs the build first inside docker. This may come
 # with a build time impact, but is sometimes desirable. If you want to run the
-# build on the host instead, use the file simply named Dockerfile in this folder
+# build on the host instead, use the file simply named Dockerfile.hostbuild in this folder
 # instead.
 
 # USAGE: