fix(amazonq): /dev to support upload of nested Dockerfiles aws#6115

Nested `Dockerfile` files were not supported with
aws#6107

Look at path basename when comparing file to list of well known files.

Author: michaellandi

packages/amazonq/.changes/next-release/Bug Fix-5f545950-eae0-4ee9-bb41-3c0ac9b7dcb1.json

@@ -0,0 +1,4 @@
+{
+	"type": "Bug Fix",
+	"description": "Amazon Q /dev not adding Dockerfiles in nested folders"
+}

packages/core/src/shared/filetypes.ts

@@ -357,8 +357,8 @@ export const codefileExtensions = new Set([
     '.zig',
 ])
 
-// Some well-known code files without an extension
-export const wellKnownCodeFiles = new Set(['Dockerfile', 'Dockerfile.build'])
+// Code file names without an extension
+export const codefileNames = new Set(['Dockerfile', 'Dockerfile.build'])
 
 /** Returns true if `filename` is a code file. */
 export function isCodeFile(filename: string): boolean {