February 9, 20179 yr I'm trying to understand unraids implementation of docker. Can someone please tell me what is the docker.img file? I see it in my cache device. A prior search on the forums seems to suggest that the docker.img file is a raw virtual block device that's stored in the cache device and gets mounted when docker applications are used/installed. But all threads discussing this, were either inconclusive or confusing. So my question is what exactly is the docker.img file and how does unraid use it to provision docker applications? Is it used as a virtual block device to store docker images and containers? Or is it used in some other completely different way? There are quite a few guides discussing how to install/configure docker apps. But none of them seem to address, what the docker.img file actually is! Any pointers to other guides or any other insight about this would be much appreciated.
February 9, 20179 yr I'm trying to understand unraids implementation of docker. Can someone please tell me what is the docker.img file? I see it in my cache device. A prior search on the forums seems to suggest that the docker.img file is a raw virtual block device that's stored in the cache device and gets mounted when docker applications are used/installed. But all threads discussing this, were either inconclusive or confusing. So my question is what exactly is the docker.img file and how does unraid use it to provision docker applications? Is it used as a virtual block device to store docker images and containers? Or is it used in some other completely different way? There are quite a few guides discussing how to install/configure docker apps. But none of them seem to address, what the docker.img file actually is! Any pointers to other guides or any other insight about this would be much appreciated. The docker.img file is where the images (ie: applications themselves) are stored. By and large, the vast majority of users only need ~15-20gig image size. All of the meta data for the applications (ie: mySQL databases, Plex metadata, etc) lives outside of the docker.img generally within a share called appdata
February 9, 20179 yr Author When you say, the docker.img file is where the images are stored, does that mean "docker.img" gets mounted like a virtual block device?
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