diff --git a/Dockerfile b/Dockerfile
index 7f66a8a..b80ef55 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,31 +1,17 @@
-# Build stage
-FROM golang:1.26.1-alpine AS builder
+FROM ruby:3.3-alpine
+
+RUN apk add --no-cache git build-base
 
 WORKDIR /app
 
-# Install dependencies
-COPY go.mod ./
-# COPY go.sum ./ # Uncomment if you have a go.sum file
-RUN go mod download
+COPY Gemfile Gemfile.lock ./
+RUN bundle install
 
-# Copy source code
-COPY . .
+COPY bbs.rb ./
+COPY lib/ ./lib/
 
-# Build the application
-RUN CGO_ENABLED=0 GOOS=linux go build -a -installsuffix cgo -o bbs-server main.go
+RUN mkdir -p /app/data
 
-# Final stage
-FROM alpine:latest
-
-RUN apk --no-cache add ca-certificates tzdata
-
-WORKDIR /root/
-
-# Copy the binary from the builder stage
-COPY --from=builder /app/bbs-server .
-
-# Expose the port
 EXPOSE 2323
 
-# Run the binary
-CMD ["./bbs-server"]
+CMD ["bundle", "exec", "ruby", "bbs.rb"]
diff --git a/Gemfile b/Gemfile
new file mode 100644
index 0000000..499b12f
--- /dev/null
+++ b/Gemfile
@@ -0,0 +1,3 @@
+source 'https://rubygems.org'
+
+gem 'bbs', git: 'https://git.teletype.hu/tools/rubbs.git'
diff --git a/Gemfile.lock b/Gemfile.lock
new file mode 100644
index 0000000..f4fda8f
--- /dev/null
+++ b/Gemfile.lock
@@ -0,0 +1,21 @@
+GIT
+  remote: https://git.teletype.hu/tools/rubbs.git
+  revision: d9232eabb4ddba2b860921657cf20fe7f3cbd830
+  specs:
+    bbs (0.1.0)
+      artii (~> 2.1)
+
+GEM
+  remote: https://rubygems.org/
+  specs:
+    artii (2.1.2)
+
+PLATFORMS
+  arm64-darwin-22
+  ruby
+
+DEPENDENCIES
+  bbs!
+
+BUNDLED WITH
+   2.5.9
diff --git a/bbs.rb b/bbs.rb
new file mode 100644
index 0000000..593606a
--- /dev/null
+++ b/bbs.rb
@@ -0,0 +1,70 @@
+# frozen_string_literal: true
+
+require 'bbs'
+require_relative 'lib/online_users'
+require_relative 'lib/message_board'
+require_relative 'lib/wiki'
+require_relative 'lib/catalog'
+require_relative 'lib/display'
+
+ONLINE   = OnlineUsers.new
+MESSAGES = MessageBoard.new(ENV.fetch('MESSAGES_PATH', 'data/messages.dat'))
+WIKI     = WikiClient.new(token: ENV['WEBAPP_WIKIJS_TOKEN'])
+CATALOG  = CatalogClient.new
+
+BBS.configure do |c|
+  c.on_session_end = ->(session) { ONLINE.remove(session.session_id) }
+
+  c.flow = BBS::Flow.define do
+    big_banner 'TELETYPE BBS', style: :success
+
+    ask :username, prompt: 'Name (blank for Anonymous)',
+        transform: ->(v) { v.strip.empty? ? 'Anonymous' : v.strip[0...20] }
+
+    call do |ctx, runner|
+      ONLINE.add(runner.session_id, ctx[:username])
+    end
+
+    menu 'Choice', loop: true do
+      option 'Message Board' do
+        call { |ctx, runner| Display.render_messages(MESSAGES.last(30), runner) }
+      end
+
+      option 'New Message' do
+        ask :message_text, prompt: 'Message (max 200 chars)', validate: :non_empty
+        call do |ctx, runner|
+          MESSAGES.append(ctx[:username], ctx[:message_text][0...200])
+          runner.write "\r\n  #{Display::GREEN}Sent.#{Display::RESET}\r\n\r\n"
+        end
+      end
+
+      option 'Blog Posts' do
+        call { |ctx, runner| Display.render_wiki_list(WIKI, 'blog', 'Blog Posts', Display::BLUE, runner) }
+      end
+
+      option 'HowTo Guides' do
+        call { |ctx, runner| Display.render_wiki_list(WIKI, 'howto', 'HowTo Guides', Display::MAGENTA, runner) }
+      end
+
+      option 'Game Catalog' do
+        call { |ctx, runner| Display.render_catalog(CATALOG, runner) }
+      end
+
+      option 'Online Users' do
+        call { |ctx, runner| Display.render_online(ONLINE, runner.session_id, ctx[:username], runner) }
+      end
+
+      option 'System Info' do
+        call { |ctx, runner| Display.render_sysinfo(ONLINE, MESSAGES, runner) }
+      end
+
+      option 'Exit' do
+        exit_menu
+      end
+    end
+
+    say 'Goodbye!', style: :muted
+  end
+end
+
+BBS.start
diff --git a/docker-compose.prod.yaml b/docker-compose.prod.yaml
index 26cbb3c..d91e0fc 100644
--- a/docker-compose.prod.yaml
+++ b/docker-compose.prod.yaml
@@ -1,18 +1,15 @@
 services:
   bbs-server:
-    build:
-      context: .
-      dockerfile: Dockerfile
+    build: .
     container_name: bbs-server-prod
     ports:
       - "2323:2323"
     environment:
       - WEBAPP_WIKIJS_TOKEN=${WEBAPP_WIKIJS_TOKEN}
-      - MESSAGES_PATH=/data/messages.dat
+      - MESSAGES_PATH=/app/data/messages.dat
     volumes:
-      - bbs-messages:/data
+      - bbs-messages:/app/data
     restart: always
-    read_only: true
     tmpfs:
       - /tmp
     cap_drop:
@@ -21,4 +18,4 @@ services:
       - no-new-privileges:true
 
 volumes:
-  bbs-messages:
\ No newline at end of file
+  bbs-messages:
diff --git a/docker-compose.yaml b/docker-compose.yaml
index e15e450..2053ed2 100644
--- a/docker-compose.yaml
+++ b/docker-compose.yaml
@@ -1,17 +1,14 @@
 services:
   bbs:
-    build:
-      context: .
-      dockerfile: Dockerfile.development
+    build: .
     container_name: teletype-bbs
     ports:
       - "2323:2323"
     volumes:
-      - ./:/app/
-      - ./data:/data
+      - ./data:/app/data
     environment:
       - WEBAPP_WIKIJS_TOKEN=${WEBAPP_WIKIJS_TOKEN:-}
-      - MESSAGES_PATH=/data/messages.dat
+      - MESSAGES_PATH=/app/data/messages.dat
     restart: unless-stopped
     stdin_open: true
     tty: true
diff --git a/env-example b/env-example
index f6ee431..27b4305 100644
--- a/env-example
+++ b/env-example
@@ -1 +1,2 @@
-WEBAPP_WIKIJS_TOKEN=
\ No newline at end of file
+WEBAPP_WIKIJS_TOKEN=
+MESSAGES_PATH=data/messages.dat
\ No newline at end of file
diff --git a/lib/catalog.rb b/lib/catalog.rb
new file mode 100644
index 0000000..bb2c6e9
--- /dev/null
+++ b/lib/catalog.rb
@@ -0,0 +1,27 @@
+# frozen_string_literal: true
+
+require 'net/http'
+require 'json'
+require 'uri'
+
+class CatalogClient
+  API_URL   = 'https://games.teletype.hu/api/software'
+  GAMES_URL = 'https://games.teletype.hu'
+
+  def fetch
+    uri  = URI(API_URL)
+    http = Net::HTTP.new(uri.host, uri.port)
+    http.use_ssl      = uri.scheme == 'https'
+    http.open_timeout = 12
+    http.read_timeout = 12
+    data = JSON.parse(http.get(uri.path).body)
+    data.is_a?(Hash) ? (data['softwares'] || []) : data
+  rescue => e
+    warn "Catalog fetch error: #{e}"
+    []
+  end
+
+  def play_url(path)
+    "#{GAMES_URL}#{path}"
+  end
+end
diff --git a/lib/display.rb b/lib/display.rb
new file mode 100644
index 0000000..dccb95b
--- /dev/null
+++ b/lib/display.rb
@@ -0,0 +1,201 @@
+# frozen_string_literal: true
+
+require 'time'
+
+module Display
+  W = 70
+
+  RESET   = "\e[0m"
+  BOLD    = "\e[1m"
+  CYAN    = "\e[0;36m"
+  YELLOW  = "\e[0;33m"
+  GREEN   = "\e[1;32m"
+  RED     = "\e[1;31m"
+  MAGENTA = "\e[0;35m"
+  WHITE   = "\e[1;37m"
+  BLUE    = "\e[0;34m"
+  GRAY    = "\e[0;37m"
+
+  module_function
+
+  def hr(color = GRAY)
+    "  #{color}#{'─' * (W - 4)}#{RESET}\r\n"
+  end
+
+  def box_header(title, color = CYAN)
+    pad = [W - title.length - 6, 2].max
+    "  #{color}┌─ #{WHITE}#{title} #{color}#{'─' * pad}┐#{RESET}\r\n"
+  end
+
+  def strip_md(text)
+    text.gsub(/\[([^\]]+)\]\([^)]+\)/, '\1')
+        .gsub(/[#*_`~>|\\]/, '')
+        .gsub(/\r?\n+/, ' ')
+        .strip
+  end
+
+  def wrap(text, indent: 4, width: W - 6)
+    words = strip_md(text).split
+    lines = []
+    line  = +''
+    words.each do |word|
+      if line.empty?
+        line << word
+      elsif line.length + 1 + word.length <= width
+        line << ' ' << word
+      else
+        lines << line.dup
+        line = +word
+      end
+    end
+    lines << line unless line.empty?
+    lines.map { |l| "#{' ' * indent}#{l}\r\n" }.join
+  end
+
+  def fmt_date(iso)
+    Time.parse(iso).strftime('%Y-%m-%d')
+  rescue
+    iso.to_s
+  end
+
+  def wait_enter(runner)
+    runner.write "\r\n  #{GRAY}Press ENTER to continue...#{RESET}"
+    runner.readline
+  end
+
+  def render_messages(messages, runner)
+    runner.write "\r\n"
+    runner.write box_header('Message Board')
+    runner.write "\r\n"
+    if messages.empty?
+      runner.write "  #{GRAY}No messages yet.#{RESET}\r\n"
+    else
+      messages.each_with_index do |msg, i|
+        runner.write "  #{GRAY}[#{i + 1}]#{RESET} #{YELLOW}#{msg.timestamp}#{RESET} #{WHITE}#{msg.username}#{RESET}: #{GRAY}#{msg.text}#{RESET}\r\n"
+      end
+    end
+    runner.write "\r\n"
+    wait_enter(runner)
+  end
+
+  def render_wiki_list(wiki, tag, title, color, runner)
+    runner.write "\r\n"
+    runner.write box_header(title, color)
+    runner.write "\r\n  #{GRAY}Loading...#{RESET}\r\n"
+
+    pages = wiki.list(tag)
+    runner.write "\e[1A\e[2K"
+
+    if pages.empty?
+      runner.write "  #{RED}No results.#{RESET}\r\n\r\n"
+      wait_enter(runner)
+      return
+    end
+
+    shown = pages.first(25)
+    shown.each_with_index do |page, i|
+      runner.write "  #{GRAY}#{i + 1}.#{RESET} #{color}#{page['title']}#{RESET} #{GRAY}#{fmt_date(page['createdAt'])}#{RESET}\r\n"
+      desc = page['description'].to_s.strip
+      runner.write "     #{GRAY}#{desc[0...65]}#{RESET}\r\n" unless desc.empty?
+    end
+
+    runner.write "\r\n  #{GRAY}Enter number to read (blank to go back):#{RESET} "
+    input = runner.readline&.strip
+    return if input.nil? || input.empty?
+
+    idx  = input.to_i - 1
+    page = shown[idx]
+    unless page
+      runner.write "\r\n  #{RED}Invalid selection.#{RESET}\r\n"
+      wait_enter(runner)
+      return
+    end
+
+    runner.write "\r\n  #{GRAY}Loading page...#{RESET}\r\n"
+    body = wiki.content(page['id'])
+    runner.write "\e[1A\e[2K"
+
+    runner.write "\r\n"
+    runner.write hr(color)
+    runner.write "  #{color}#{page['title']}#{RESET}\r\n"
+    runner.write "  #{GRAY}#{fmt_date(page['createdAt'])}  #{wiki.page_url(page['locale'], page['path'])}#{RESET}\r\n"
+    runner.write hr(color)
+    runner.write "\r\n"
+    runner.write wrap(body)
+    runner.write "\r\n"
+    wait_enter(runner)
+  end
+
+  def render_catalog(catalog, runner)
+    runner.write "\r\n"
+    runner.write box_header('Game Catalog', CYAN)
+    runner.write "\r\n  #{GRAY}Loading...#{RESET}\r\n"
+
+    games = catalog.fetch
+    runner.write "\e[1A\e[2K"
+
+    unless games.is_a?(Array) && !games.empty?
+      runner.write "  #{RED}Could not load catalog.#{RESET}\r\n\r\n"
+      wait_enter(runner)
+      return
+    end
+
+    games.each_with_index do |entry, i|
+      next unless entry.is_a?(Hash)
+      sw      = entry['software']      || {}
+      latest  = entry['latestRelease'] || {}
+      count   = (entry['releases'] || []).length
+
+      runner.write "\r\n"
+      runner.write hr
+      runner.write "  #{CYAN}#{i + 1}. #{sw['title']}#{RESET}  #{GRAY}#{sw['platform']}  #{sw['author']}#{RESET}\r\n"
+      runner.write wrap(sw['desc'].to_s) unless sw['desc'].to_s.strip.empty?
+
+      badges = []
+      badges << "#{GREEN}[▶ Play]#{RESET}"       if latest['htmlFolderPath'].to_s  != ''
+      badges << "#{YELLOW}[⬇ Download]#{RESET}"  if latest['cartridgePath'].to_s   != ''
+      badges << "#{BLUE}[Source]#{RESET}"        if latest['sourcePath'].to_s      != ''
+      badges << "#{MAGENTA}[Docs]#{RESET}"       if latest['docsFolderPath'].to_s  != ''
+      runner.write "  #{badges.join('  ')}\r\n" unless badges.empty?
+
+      if latest['htmlFolderPath'].to_s != ''
+        runner.write "  #{GRAY}#{catalog.play_url(latest['htmlFolderPath'])}#{RESET}\r\n"
+      end
+      runner.write "  #{GRAY}#{count} versions available#{RESET}\r\n" if count > 1
+    end
+
+    runner.write "\r\n"
+    runner.write hr
+    runner.write "  #{GRAY}#{CatalogClient::GAMES_URL}#{RESET}\r\n\r\n"
+    wait_enter(runner)
+  end
+
+  def render_online(online, my_sid, my_name, runner)
+    runner.write "\r\n"
+    runner.write box_header('Online Users', YELLOW)
+    runner.write "\r\n"
+
+    snapshot = online.snapshot
+    snapshot.sort.each do |sid, name|
+      marker = sid == my_sid ? "  #{GRAY}← you#{RESET}" : ''
+      runner.write "  #{WHITE}#{name}#{RESET}#{marker}\r\n"
+    end
+
+    runner.write "\r\n  #{GRAY}#{snapshot.size} user(s) online#{RESET}\r\n\r\n"
+    wait_enter(runner)
+  end
+
+  def render_sysinfo(online, messages, runner)
+    runner.write "\r\n"
+    runner.write box_header('System Info', MAGENTA)
+    runner.write "\r\n"
+    runner.write "  #{GRAY}Online users   #{WHITE}#{online.count}#{RESET}\r\n"
+    runner.write "  #{GRAY}Messages       #{WHITE}#{messages.count}#{RESET}\r\n"
+    runner.write "  #{GRAY}Wiki           #{WHITE}https://wiki.teletype.hu#{RESET}\r\n"
+    runner.write "  #{GRAY}Games API      #{WHITE}https://games.teletype.hu#{RESET}\r\n"
+    runner.write "  #{GRAY}Platform       #{WHITE}#{RUBY_PLATFORM}#{RESET}\r\n"
+    runner.write "  #{GRAY}Ruby           #{WHITE}#{RUBY_VERSION}#{RESET}\r\n"
+    runner.write "\r\n"
+    wait_enter(runner)
+  end
+end
diff --git a/lib/message_board.rb b/lib/message_board.rb
new file mode 100644
index 0000000..1420e75
--- /dev/null
+++ b/lib/message_board.rb
@@ -0,0 +1,45 @@
+# frozen_string_literal: true
+
+require 'csv'
+require 'time'
+require 'fileutils'
+
+class MessageBoard
+  Message = Struct.new(:timestamp, :username, :text)
+
+  def initialize(path)
+    @path     = path
+    @messages = []
+    @mu       = Mutex.new
+    load_csv
+  end
+
+  def append(username, text)
+    msg = Message.new(Time.now.strftime('%m-%d %H:%M'), username, text)
+    @mu.synchronize do
+      @messages << msg
+      FileUtils.mkdir_p(File.dirname(@path))
+      CSV.open(@path, 'a') { |csv| csv << [msg.timestamp, msg.username, msg.text] }
+    end
+    msg
+  end
+
+  def last(n = 30)
+    @mu.synchronize { @messages.last(n) }
+  end
+
+  def count
+    @mu.synchronize { @messages.size }
+  end
+
+  private
+
+  def load_csv
+    return unless File.exist?(@path)
+    CSV.foreach(@path) do |row|
+      @messages << Message.new(*row)
+    end
+  rescue => e
+    warn "MessageBoard load error: #{e}"
+  end
+end
diff --git a/lib/online_users.rb b/lib/online_users.rb
new file mode 100644
index 0000000..60ec858
--- /dev/null
+++ b/lib/online_users.rb
@@ -0,0 +1,24 @@
+# frozen_string_literal: true
+
+class OnlineUsers
+  def initialize
+    @users = {}
+    @mu    = Mutex.new
+  end
+
+  def add(session_id, name)
+    @mu.synchronize { @users[session_id] = name }
+  end
+
+  def remove(session_id)
+    @mu.synchronize { @users.delete(session_id) }
+  end
+
+  def snapshot
+    @mu.synchronize { @users.dup }
+  end
+
+  def count
+    @mu.synchronize { @users.size }
+  end
+end
diff --git a/lib/wiki.rb b/lib/wiki.rb
new file mode 100644
index 0000000..a3cc75a
--- /dev/null
+++ b/lib/wiki.rb
@@ -0,0 +1,53 @@
+# frozen_string_literal: true
+
+require 'net/http'
+require 'json'
+require 'uri'
+
+class WikiClient
+  BASE_URL = 'https://wiki.teletype.hu'
+
+  def initialize(token: nil)
+    @token = token
+  end
+
+  def list(tag)
+    query = <<~GQL
+      { pages { list(orderBy: CREATED, orderByDirection: DESC, tags: ["#{tag}"]) {
+        id path title description createdAt locale
+      }}}
+    GQL
+    graphql(query).dig('data', 'pages', 'list') || []
+  rescue => e
+    warn "Wiki list error: #{e}"
+    []
+  end
+
+  def content(page_id)
+    query = "{ pages { single(id: #{page_id}) { content } } }"
+    graphql(query).dig('data', 'pages', 'single', 'content') || ''
+  rescue => e
+    warn "Wiki content error: #{e}"
+    ''
+  end
+
+  def page_url(locale, path)
+    "#{BASE_URL}/#{locale}/#{path}"
+  end
+
+  private
+
+  def graphql(query)
+    uri  = URI("#{BASE_URL}/graphql")
+    http = Net::HTTP.new(uri.host, uri.port)
+    http.use_ssl       = uri.scheme == 'https'
+    http.open_timeout  = 12
+    http.read_timeout  = 12
+
+    req = Net::HTTP::Post.new(uri.path, 'Content-Type' => 'application/json')
+    req['Authorization'] = "Bearer #{@token}" if @token
+    req.body = JSON.generate(query: query)
+
+    JSON.parse(http.request(req).body)
+  end
+end