feat(docker): update BIRD build process and documentation

Refined the BIRD build process in the Docker setup by consolidating the source download and extraction steps. Enhanced the `bird-from-source.sh` script to include a fallback mechanism for downloading the BIRD tarball from GitHub if the primary source fails. Updated the README documentation to clarify the build process and provide links to the BIRD source. This improves reliability and user understanding of the setup.

deploy/docker/README.md

@@ -11,7 +11,7 @@
 | Было | Стало |
 |------|--------|
 | 8× `go mod download` + 8× `go build` (разные BIN) | 1× download + 1× компиляция всех `cmd/*` |
-| 2× сборка BIRD из исходников (api, all) | 1× stage `birdc`, копируется в runtime |
+| 2× сборка BIRD из исходников (api, all) | 1× stage `birdc` ([bird-from-source.sh](bird/bird-from-source.sh): [bird.nic.cz/get-bird](https://bird.nic.cz/get-bird/)) |
 | 2× `npm ci` (web, web-all) | 1× `web-deps` + 1× `web-build` + два nginx-образа (общий артефакт) |
 | 8 runner'ов с checkout/login | 1 job `docker-go`, 1 job `docker-web` |
 

deploy/docker/bird/bird-from-source.sh

@@ -1,7 +1,9 @@
 #!/bin/sh
-# Сборка BIRD из официального tarball (версия задаётся BIRD_VERSION, по умолчанию 2.14).
-# Запуск от root (Docker) или через sudo на хосте. Префикс установки: /usr/local.
-# birdc требует ncurses + readline; в runtime-образе gobinary — libncurses6 + libreadline8.
+# Сборка BIRD из официального tarball (BIRD_VERSION, по умолчанию 2.14).
+# Источники: https://bird.nic.cz/get-bird/ (актуальные), https://bird.nic.cz/old-releases/ (архив).
+# Tarball: https://bird.nic.cz/download/bird-<version>.tar.gz
+# Запуск от root (Docker) или через sudo на хосте. Префикс: /usr/local.
+# birdc: ncurses + readline; runtime gobinary — libreadline8 + libncurses6.
 set -eu
 BIRD_VERSION="${BIRD_VERSION:-2.14}"
 export DEBIAN_FRONTEND=noninteractive
@@ -18,14 +20,54 @@ apt-get install -y --no-install-recommends \
 
 cd /tmp
 rm -rf "bird-${BIRD_VERSION}"
-curl -fsSL "https://bird.network.cz/download/bird-${BIRD_VERSION}.tar.gz" | tar xz
-cd "bird-${BIRD_VERSION}"
+BIRD_TARBALL="bird-${BIRD_VERSION}.tar.gz"
+BIRD_SRC_DIR="bird-${BIRD_VERSION}"
+BIRD_NIC_URL="https://bird.nic.cz/download/${BIRD_TARBALL}"
+# Старые релизы (2.14 и др.) — только на old-releases; get-bird — для актуальных.
+BIRD_REFERER="https://bird.nic.cz/old-releases/"
+case "${BIRD_VERSION}" in
+	2.19.*|2.18.*|2.17.*|3.*) BIRD_REFERER="https://bird.nic.cz/get-bird/" ;;
+esac
+GITHUB_TAG_URL="https://github.com/CZ-NIC/bird/archive/refs/tags/v${BIRD_VERSION}.tar.gz"
+
+download_bird_tarball() {
+	if curl -fsSL --retry 3 --retry-delay 2 \
+		-H "Referer: ${BIRD_REFERER}" \
+		-H "User-Agent: EvoBGP-docker-build/1.0 (+https://bird.nic.cz/get-bird/)" \
+		"${BIRD_NIC_URL}" -o "${BIRD_TARBALL}"; then
+		return 0
+	fi
+	echo "bird.nic.cz download failed, trying GitHub mirror (CZ-NIC/bird)..." >&2
+	curl -fsSL --retry 3 --retry-delay 2 \
+		-H "User-Agent: EvoBGP-docker-build/1.0" \
+		"${GITHUB_TAG_URL}" -o "${BIRD_TARBALL}"
+}
+
+download_bird_tarball
+tar xzf "${BIRD_TARBALL}"
+rm -f "${BIRD_TARBALL}"
+
+if [ ! -d "${BIRD_SRC_DIR}" ]; then
+	# GitHub archive: bird-2.14 → иногда bird-bird-2.14; ищем единственный каталог bird-*.
+	BIRD_SRC_DIR="$(find /tmp -maxdepth 1 -type d -name 'bird-*' | head -n 1)"
+	if [ -z "${BIRD_SRC_DIR}" ] || [ ! -d "${BIRD_SRC_DIR}" ]; then
+		echo "BIRD source directory not found after extract" >&2
+		exit 1
+	fi
+fi
+
+cd "${BIRD_SRC_DIR}"
+if [ ! -f ./configure ]; then
+	apt-get install -y --no-install-recommends autoconf automake libtool
+	autoreconf -fi
+fi
 ./configure --prefix=/usr/local --enable-client
 make -j"$(nproc)"
 make install
 cd /
-rm -rf "/tmp/bird-${BIRD_VERSION}"
+rm -rf "${BIRD_SRC_DIR}"
 
-apt-get purge -y build-essential flex bison libncurses-dev libreadline-dev
+apt-get purge -y build-essential flex bison libncurses-dev libreadline-dev autoconf automake libtool 2>/dev/null || \
+	apt-get purge -y build-essential flex bison libncurses-dev libreadline-dev
 apt-get autoremove -y
 rm -rf /var/lib/apt/lists/*