Add shared Erlang builder/runtime base images from registry.

Publish erlang-builder and erlang-runtime as :latest, use them in prod and API test builds, auto-collect NIF libs, and sync CI to pull/push bases before eventhub build.

Co-authored-by: Cursor <cursoragent@cursor.com>

docker/ApiTests.Dockerfile

@@ -1,21 +1,15 @@
-# ============================================================
-# Одноэтапный Dockerfile
-# ============================================================
-FROM erlang:28-alpine
+# API common_test — только builder-стадия (полный OTP + компиляторы).
+ARG ERLANG_BUILDER_IMAGE=git.sabilin.com/eventhub/erlang-builder:latest
+FROM ${ERLANG_BUILDER_IMAGE}
 
-# Устанавливаем инструменты для сборки и runtime-зависимости
-RUN apk add \
-    make musl-dev \
-    rust cargo openssl-dev libsodium-dev
+WORKDIR /app
 
-# Копируем конфигурацию и исходники
 COPY rebar.config ./
 COPY include/ include/
 COPY src/ src/
 COPY test/api_*_SUITE.erl test/
 COPY test/api/ test/api/
 
-# Компилируем и запускаем тесты
 RUN rebar3 compile
 
-CMD rebar3 ct --sname ci_api_test -v
+CMD ["rebar3", "ct", "--sname", "ci_api_test", "-v"]