Support Mount the container's root filesystem as read only ( --read-only option ) for docker executor

Description

• There is a --read-only option to create a docker container
• This is a requirement to pass CIS_Docker_Benchmark
  • "Ensure that the container's root filesystem is mounted as read only"
• Support this option for the docker executor

Proposal

• Possibly add the option into this HostConfig code block

Links to references

• Internal only support reference