All I did at first was stop the container, then run the launcher start command with that parameter. Then I manually edited the --shm-size params inside the launcher script itself and rebuilt the container. Then it adjusted the value correctly. If you override the param on the command line to rebuild the container, then won’t the change be lost if you perform an update/rebuild through the /admin/upgrade interface? That’s why I thought it might be best to make it a field in app.yml - then it would persist through rebuilds and code updates.
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