Docker for Mac: Limit memory allocation

The Docker for mac GUI does not allow to configure less than 1GiB as allocated memory. In some cases you might want to configre a lower value, especially when you are limited to available RAM.

You can set any value in the config file. Just restart docker afterwards.
File: ~/Library/Group\ Containers/group.com.docker/settings.json

...
"memoryMiB" : 1024,
...

Note that the final memory consumption might be higher than your configured value. So I guess, this covers only a memory pre-allocation, while the final consumption depends on you container setup.

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