fix: Guarantee the execution permission in the entrypoint.bash file (#149)

* add a command to guarantee the execution permission

* make more readable

* remove the duplicate command

Author: LuizSDCit

modules/cloudbuild/cloudbuild_builder/Dockerfile

@@ -45,4 +45,5 @@ RUN apt-get update && \
 
 ENV PATH=/builder/terraform/:$PATH
 COPY entrypoint.bash /builder/entrypoint.bash
+RUN chmod +x /builder/entrypoint.bash
 ENTRYPOINT ["/builder/entrypoint.bash"]