feat: upgrade Ruby to 3.4.4 and add iflow-cli

- Upgrade Ruby version from 3.4.1 to 3.4.4
- Pre-install @iflow-ai/iflow-cli@latest globally via npm
- Update README.md to reflect changes

Author: ide-coder

Dockerfile

@@ -88,9 +88,9 @@ RUN curl -fsSL https://deb.nodesource.com/setup_${NODE_VERSION}.x | bash - \
     && apt-get install -y nodejs \
     && rm -rf /var/lib/apt/lists/*
 
-# Configure npm mirror and install pnpm, yarn
+# Configure npm mirror and install pnpm, yarn, iflow-cli
 RUN npm config set registry https://registry.npmmirror.com --global \
-    && npm install -g pnpm yarn \
+    && npm install -g pnpm yarn @iflow-ai/iflow-cli@latest \
     && pnpm config set registry https://registry.npmmirror.com \
     && yarn config set registry https://registry.npmmirror.com
 
@@ -142,8 +142,8 @@ RUN git clone https://github.com/rbenv/rbenv.git /opt/rbenv \
 
 # Install latest stable Ruby and Rails
 RUN /opt/rbenv/plugins/ruby-build/install.sh \
-    && rbenv install 3.4.1 \
-    && rbenv global 3.4.1 \
+    && rbenv install 3.4.4 \
+    && rbenv global 3.4.4 \
     && rbenv rehash \
     && gem install bundler rails --no-document \
     && rbenv rehash

README.md

@@ -7,7 +7,7 @@ A comprehensive development environment Docker image based on code-server, pre-c
 - **Base**: codercom/code-server:latest
 - **User**: `coder` with passwordless sudo (su blocked)
 - **Languages**: Go, Python 3.13, Node.js, JDK 21, Ruby/Rails
-- **Tools**: git, curl, wget, vim, dnsutils (nslookup), yq, kubectl, gopls, uv, conda, pnpm, yarn, Maven
+- **Tools**: git, curl, wget, vim, dnsutils (nslookup), yq, kubectl, gopls, uv, conda, pnpm, yarn, Maven, iflow-cli
 
 ## Quick Start
 
@@ -140,7 +140,7 @@ services:
 | Python | 3.13 | uv, conda | pypi.tuna.tsinghua.edu.cn |
 | Node.js | 22 LTS | npm, pnpm, yarn | npmmirror |
 | JDK | 21 | Maven 3.9.11 | Aliyun |
-| Ruby | 3.4.1 | Rails, Bundler | Ruby China |
+| Ruby | 3.4.4 | Rails, Bundler | Ruby China |
 
 ## Build