Update dockerfile and changelog

Author: darkriszty

CHANGELOG.md

@@ -11,6 +11,13 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/) and this p
 ### Fixed
 - Issue #85: Fixed markdown spec compliance for unbordered tables with center/right aligned first columns. First column now uses left padding logic regardless of alignment to prevent invalid markdown output.
 
+### Changed
+- **BREAKING**: Updated NPM package compilation target from ES5 to ES2022. Requires Node.js 16.11+.
+- Updated TypeScript to 6 with full strict mode.
+- Updated all dependencies to latest versions.
+- Fixed vulnerabilities in transitive dependencies.
+- Updated Docker image to use `lts-alpine` tag for automatic LTS tracking and added OS-level security patching.
+
 ## 3.7.0 - 2025-08-29
 ### Added
 - Issue #78: Support tab indentation for tables without a border.

Dockerfile

@@ -1,4 +1,6 @@
-FROM node:22-alpine AS builder
+FROM node:lts-alpine AS builder
+
+RUN apk upgrade --no-cache
 
 WORKDIR /tmp
 
@@ -12,7 +14,9 @@ COPY src/ src/
 RUN npm run compile
 
 
-FROM node:22-alpine
+FROM node:lts-alpine
+
+RUN apk upgrade --no-cache
 
 WORKDIR /app