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I am new to Docker and I want to run Docker with ram only storage. In other words, I do not want Docker to save anything on persistent storage. I found out that on Linux Docker supports tmpfs. Is there any such support for MacOS? I have tried setting --tmpfs flag and docker run commands run fine on mac with that flag.

Jiri Klouda
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muhammad haris
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1 Answers1

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According to the docs tmpfs is linux only.

RAM disk

If you want "RAM only storage", you can literally use a RAM disk. ie: 

diskutil erasevolume HFS+ 'DockerDisk' `hdiutil attach -nomount ram://2097152 `

Then you can point volumes at /Volumes/DockerDisk. Drop and recreate at will.

Docker will still store its VM and images on disk. See: Docker > Preferences > Disk.

Jacob Vanus
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