fix: update bird build script and Dockerfile to include readline dependency

Modified the bird build script to enable readline support and updated the Dockerfile to install both libreadline8 and libncurses6, ensuring compatibility with the birdc runtime requirements.

deploy/docker/gobinary/Dockerfile

@@ -46,8 +46,8 @@ EXPOSE 8080
 ENTRYPOINT ["/usr/local/bin/evobgp"]
 
 FROM runtime AS runtime-birdc
-# birdc (--disable-readline) линкуется с ncurses (bookworm: libncurses6).
+# birdc: динамическая линковка readline + ncurses (debian bookworm).
 RUN apt-get update \
-    && apt-get install -y --no-install-recommends libncurses6 \
+    && apt-get install -y --no-install-recommends libreadline8 libncurses6 \
     && rm -rf /var/lib/apt/lists/*
 COPY --from=birdc /usr/local/sbin/bird /usr/local/sbin/birdc /usr/local/sbin/