Flowable/all-in-one image fails on Ubuntu 18.04.1 LTS 64Bit

When running the stock all-in-one Docker image I get:

docker run -p8080:8080 flowable/all-in-one
docker: Error response from daemon: OCI runtime create failed: container_linux.go:344: starting container process caused “exec: “/opt/tomcat/bin/catalina.sh”: stat /opt/tomcat/bin/catalina.sh: permission denied”: unknown.
ERRO[0003] error waiting for container: context canceled

I have the latest docker-ce.

Other images run (with some tweeks) but searches don’t locate much relevant help.

Any guidance would be appreciated