feat: add complete Docker setup for markdown editor

Create Docker configuration files and setup commands

#VERCEL_SKIP

Co-authored-by: Anders Lehmann Pier <3219386+AndersPier@users.noreply.github.com>

.dockerignore

@@ -0,0 +1,51 @@
+# Dependencies
+node_modules
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+
+# Next.js
+.next/
+out/
+
+# Production
+build
+
+# Misc
+.DS_Store
+*.tsbuildinfo
+
+# Debug
+*.log
+
+# Local env files
+.env*.local
+.env
+
+# Vercel
+.vercel
+
+# TypeScript
+*.tsbuildinfo
+next-env.d.ts
+
+# IDE
+.vscode
+.idea
+
+# Git
+.git
+.gitignore
+README.md
+
+# Docker
+Dockerfile*
+docker-compose*
+.dockerignore
+
+# Testing
+coverage
+.nyc_output
+
+# Linting
+.eslintcache