I checked the closed issue reported on github: https://github.com/moby/moby/issues/3285
But the solution doesn't works.
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Can you detail what you trying to do and what you attempted? – Matt Nov 08 '17 at 04:28
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Please add the exact steps that you have done and the way you did it. The link you provided doesn't give any idea of your issue – Ravindu Nirmal Fernando Nov 08 '17 at 05:23
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I guess you want to add environment variables to an already running container.
From an environment-file, there's no way to do it currently, except removing the container and starting it again with the new env-file.
For single variables you can use docker exec CONTAINER_NAME export VARIABLE=VALUE.
The issue you linked to is about container configurations like cpu-limits and memory limits. Also you can change the restart policy with docker update.
samprog
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Not able to override existing environment variable using export method – Jaswinder Nov 11 '17 at 13:16
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How are you checking if they got overrode? If you try to get the changed variables with `docker exec -ti CONTAINER_NAME bash`, you won't get them, as it acts similiar to an ssh session inside the container (new environment, old variables). Try checking with `docker exec -ti CONTAINER_NAME env` – samprog Nov 11 '17 at 13:56