Fix Dockerfile port and Express 5 error handler

- Corrected EXPOSE port from 3000 to 3456 to match server.js
- Fixed error handler signature for Express 5 compatibility
- Bumped version to 2.1.3

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

Author: mircealungu

CHANGELOG.md

@@ -7,6 +7,17 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [2.1.3] - 2025-11-19
+
+### Fixed
+- Corrected Dockerfile EXPOSE port from 3000 to 3456 to match server configuration
+- Fixed Express 5 error handler signature (added missing `next` parameter)
+
+## [2.1.2] - 2025-11-19
+
+### Fixed
+- Express 5 compatibility: Added `next` parameter to error handler
+
 ## [2.1.1] - 2025-11-19
 
 ### Fixed

Dockerfile

@@ -16,6 +16,6 @@ RUN npm install
 
 COPY --chown=node:node . .
 
-EXPOSE 3000
+EXPOSE 3456
 
 CMD [ "node",  "server.js" ]

package.json

@@ -1,6 +1,6 @@
 {
   "name": "readability-server",
-  "version": "2.1.1",
+  "version": "2.1.3",
   "description": "",
   "main": "index.js",
   "type": "module",

server.js

@@ -89,7 +89,7 @@ app.get("/debug-sentry", function mainHandler() {
 app.use(Sentry.Handlers.errorHandler());
 
 // Optional fallthrough error handler
-app.use(function onError(err, req, res) {
+app.use(function onError(err, req, res, next) {
   // The error id is attached to `res.sentry` to be returned
   // and optionally displayed to the user for support.
   res.statusCode = 500;