Saving Docker Images

Andrew Pruski shows how to save a Docker image:

What I’m going to do now is save my custom image to a location [C:\temp] on my host server. So I’ll run: –

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docker save -o myfirstimage.tar myfirstimage

N.B. – I’m saving the file as a .tar as this seems to be the format that works best for loading the image. I’ve tried exporting to other formats (.zip) but it always seems to become corrupt. The .tar format has always worked for me so I’ll stick with it.

If I’m understanding Andrew correctly, that’s because docker save will only generate a tar archive.  Keep reading for more details, including how to restore a Docker image to another machine.

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