ci: Add missing COPY for ./test/lint/test_runner

Author: MarcoFalke

ci/lint_imagefile

@@ -12,6 +12,7 @@ ENV LC_ALL=C.UTF-8
 COPY ./.python-version /.python-version
 COPY ./ci/lint/container-entrypoint.sh /entrypoint.sh
 COPY ./ci/lint/04_install.sh /install.sh
+COPY ./test/lint/test_runner /test/lint/test_runner
 
 RUN /install.sh && \
   echo 'alias lint="./ci/lint/06_script.sh"' >> ~/.bashrc && \