fix(ci): materialize rebar test src_dirs in shared test image. Refs EventHub/EventHubBack#36

docker/ApiTests.Dockerfile

@@ -10,9 +10,17 @@ COPY src/ src/
 COPY test/unit/ test/unit/
 COPY test/api_*_SUITE.erl test/
 COPY test/api/ test/api/
+COPY docker/ci-test-prepare.sh /usr/local/bin/ci-test-prepare.sh
+RUN chmod +x /usr/local/bin/ci-test-prepare.sh
 
-# default profile: CT (test/api); test profile: EUnit (test/unit)
-RUN rebar3 compile && rebar3 as test compile
+# default profile: CT (test/api); test profile: EUnit (test/unit).
+# rebar3 кладёт битые/symlink extra src_dirs; готовим реальные копии (как scripts/fix-rebar-unit-symlink.sh).
+RUN rebar3 compile \
+ && mkdir -p _build/test/lib/eventhub/test \
+ && (rebar3 as test compile || true) \
+ && ci-test-prepare.sh \
+ && rebar3 as test compile
 
 # По умолчанию CT; для eunit: docker run … rebar3 eunit --sname ci_eunit --verbose
+ENTRYPOINT ["ci-test-prepare.sh"]
 CMD ["rebar3", "ct", "--sname", "ci_api_test", "-v"]