Getting 'Operation not permitted' error when setting ulimit for memlock in a Docker container...

Getting 'Operation not permitted' error when setting ulimit for memlock in a Docker container running ubuntu:xenial (macOS host) Helpful? Please support me on Patreon: https://www.patreon.com/roelvandepaar With thanks & praise to God, and with thanks to the many people who have made this project possible! | Content (except music & images) licensed under cc by-sa 3.0 | Music: https://www.bensound.com/royalty-free-music | Images: https://stocksnap.io/license & others | With thanks to user ctrl-alt-delor (https://unix.stackexchange.com/users/4778), user Chris Bedford (https://unix.stackexchange.com/users/133807), and the Stack Exchange Network (http://unix.stackexchange.com/questions/450799). Trademarks are property of their respective owners. Disclaimer: All information is provided "AS IS" without warranty of any kind. You are responsible for your own actions. Please contact me if anything is amiss at Roel D.OT VandePaar A.T gmail.com.

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