Mount container's root filesystem as read only#231
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The container's root file system should be treated as a 'golden image' and any writes to the rootfilesystem should be avoided. You should explicitly define a container volume for writing. Add a
--read-onlyflag to allow the container's root filesystem to bemounted as read only. This can be used in combination with volumes to force a container's process to only write to locations that will be persisted. refer: https://benchmarks.cisecurity.org/tools2/docker/CIS_Docker_1.11.0_Benchmark_v1.0.0.pdf