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How can I run a Docker Image inside a USB Flash Drive to use in a Linux Computer without Docker installed?

To avoid Installing in Each Linux Computer, I just need to use docker inside the USB Flash Drive, to use Images I create or Working with programs inside my OS images.

I've Looking for a while for this, but I only Find this Question without awnser:

https://forums.docker.com/t/can-i-run-my-docker-container-from-flash-drive/32393

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  • This seems to attend your necessities github.com/jrruethe/debian-micro – vfbsilva May 25 '18 at 18:50
  • "The only dependency is that Docker needs to be available on the build machine." Docker is not available on the machine – F4NT0 May 25 '18 at 19:51
  • Well you need to make the iso and have one working version of docker – vfbsilva May 25 '18 at 20:30
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This has been answered in superuser. It basically comes down to manually installing docker on your external drive by downloading the binaries and creating an start script that specifies the path of the images using the --data-root parameter of dockerd. You cannot / should not do this with a ntfs or fat32 file system, however. I managed to run a portable docker instance from an external harddrive with a xfs partition.

#/bin/bash
PATH=$PATH:$(pwd):$(pwd)/compose
$(pwd)/dockerd --data-root $(pwd)/../data/
pid=$(cat /var/run/docker.pid)
kill -9 $pid

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