how to get container memory limit in docker container?

[dufeng1010]

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• [x ] I have tried with the latest version of Docker Desktop
• [x ] I have tried disabling enabled experimental features
• [ ] I have uploaded Diagnostics
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Expected behavior

Actual behavior

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Steps to reproduce the behavior

when I run docker with -m 20g parameter, docker container is 20g when I run docker without -m parameter, docker container is host machine's memory. docker stats command can get right memory size.

but when I need deploy a application in docker container, this application need docker container memory size, i read /sys/fs/cgroup/memory/memory.limit_in_bytes, it is 9223372036854771712. If I read /proc/meminfo， it is host machine' memory size. how can I read a container memory size conrrectly?

[aiordache]

@thaJeztah is there a way to find the memory limit from inside the container?

[ChenJhua]

I also want to know how to get it

[stefanprodan]

From inside the container do: cat /sys/fs/cgroup/memory.max (note this is for Alpine).

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