Add markdownify-mcp server. (github#173)

Author: cmrigney

servers/markdownify/server.yaml

@@ -0,0 +1,40 @@
+name: markdownify
+image: mcp/markdownify
+type: server
+meta:
+  category: productivity
+  tags:
+    - productivity
+    - markdown
+    - conversion
+    - pdf
+    - docx
+    - pptx
+    - xlsx
+    - html
+    - audio
+    - youtube
+about:
+  title: Markdownify
+  description: A Model Context Protocol server for converting almost anything to Markdown.
+  icon: https://avatars.githubusercontent.com/u/182288589?s=200&v=4
+source:
+  upstream: https://github.com/zcaceres/markdownify-mcp
+  project: https://github.com/cmrigney/markdownify-mcp
+  branch: add-dockerfile
+run:
+  volumes:
+    - '{{markdownify.paths|volume|into}}'
+config:
+  description: The MCP server is allowed to access these paths
+  parameters:
+    type: object
+    properties:
+      paths:
+        type: array
+        items:
+          type: string
+        default:
+          - /Users/local-test
+    required:
+      - paths