feat(docker): install Rust toolchain (rustup) and add aarch64 cross-compilation support to Docker images

Dockerfile

@@ -30,6 +30,7 @@ RUN echo 'debconf debconf/frontend select Noninteractive' | debconf-set-selectio
         iputils-ping \
         dnsutils \
         tini \
+        gcc-aarch64-linux-gnu \
     && apt-get clean
 
 # Layer 2: Chromium + Puppeteer/Playwright browser deps
@@ -132,6 +133,12 @@ RUN curl -fsSL https://deno.land/install.sh | sh
 ENV DENO_INSTALL="/root/.deno"
 ENV PATH="$DENO_INSTALL/bin:$PATH"
 
+# Install Rust
+RUN curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y \
+    && . /root/.cargo/env \
+    && rustup target add aarch64-unknown-linux-gnu
+ENV PATH="/root/.cargo/bin:$PATH"
+
 # Set entrypoint to make nvm available in all runtime contexts
 ENTRYPOINT ["/usr/bin/tini", "--", "/usr/local/bin/docker-entrypoint.sh"]
 CMD ["bash"]