How do you use sudo sysctl in Docker Desktop terminal?

Docker Desktop
1

I tried using a sudo command in terminal, but it gave me this.

sudo : The term ‘sudo’ is not recognized as the name of a cmdlet, function, script file, or operable
program. Check the spelling of the name, or if a path was included, verify that the path is correct
and try again.
At line:1 char:1

  • sudo sysctl -w vm.max_map_count=262144
  •   + CategoryInfo          : ObjectNotFound: (sudo:String) [], CommandNotFoundException
  + FullyQualifiedErrorId : CommandNotFoundException

Can someone please find a fix to this? I’m completely new to this and I’m only using docker to install someone else’s project. I appreciate your help.

2

There is nothing to fix. The Terminal feature in Docker Desktop just opens a terminal on your host. On Windows, it is a PowerShell. You may hear about sudo for Windows, but sysctl is still a Linux command. If you need to change the parameter in Docker Desktop’s virtual machine when using the WSL2 backend, you can open a WSL2 distribution and run the command there. Or you can run it through a container like this:

docker run --rm -it --privileged bash sysctl -w vm.max_map_count=262144

But this is the default value anyway in Docker Desktop on my MacBook.

3

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