[AIRFLOW-5886] Fixed a bit too selective Dockerfile copy (#6570)

Dockerfile

@@ -346,7 +346,7 @@ COPY .github/ ${AIRFLOW_SOURCES}/.github/
 COPY dags/ ${AIRFLOW_SOURCES}/dags/
 COPY common/ ${AIRFLOW_SOURCES}/common/
 COPY licenses/ ${AIRFLOW_SOURCES}/licenses/
-COPY scripts/ci/in_container/ ${AIRFLOW_SOURCES}/scripts/ci/in_container/
+COPY scripts/ci/ ${AIRFLOW_SOURCES}/scripts/ci/
 COPY docs/ ${AIRFLOW_SOURCES}/docs/
 COPY tests/ ${AIRFLOW_SOURCES}/tests/
 COPY airflow/ ${AIRFLOW_SOURCES}/airflow/