feat: add Node.js installation to Dockerfile for improved environment setup

flutter-android/Dockerfile

@@ -7,6 +7,7 @@ ENV FLUTTER_VERSION=3.19.6
 ENV ANDROID_API=34
 ENV ANDROID_BUILD_TOOLS=34.0.0
 ENV ANDROID_CMDLINE_TOOLS=11076708
+ENV NODE_MAJOR=24
 
 # ===== ПУТИ =====
 ENV ANDROID_HOME=/opt/android-sdk
@@ -32,6 +33,15 @@ RUN apt-get update && apt-get install -y \
     libstdc++6 \
     && rm -rf /var/lib/apt/lists/*
 
+# ===== Установка Node.js 20 через NodeSource (рекомендуемый способ 2025+) =====
+RUN mkdir -p /etc/apt/keyrings \
+    && curl -fsSL https://deb.nodesource.com/gpgkey/nodesource-repo.gpg.key | gpg --dearmor -o /etc/apt/keyrings/nodesource.gpg \
+    && echo "deb [signed-by=/etc/apt/keyrings/nodesource.gpg] https://deb.nodesource.com/node_${NODE_MAJOR}.x nodistro main" | tee /etc/apt/sources.list.d/nodesource.list \
+    && apt-get update \
+    && apt-get install -y nodejs \
+    && npm install -g npm@latest \
+    && rm -rf /var/lib/apt/lists/*
+
 # ===== ANDROID SDK =====
 RUN mkdir -p ${ANDROID_HOME}/cmdline-tools \
     && cd ${ANDROID_HOME}/cmdline-tools \