'What is the point in backing up a docker container?
I have started using Docker recently and currently running Portainer and Nginx.
Of course, I've also started looking deeper into Docker, how it works, how to back it up, and I just feel like I'm missing something.
The data, whether it be bind mount or volume, resides on the host, when all is said and done.
I followed some video showing how to backup a container, export an image and reimport it, and once I reached the end I realize that you still have to run the command with all the ports, mounts, etc. like if I was simply using the original image. Of course, since the data isn't backed up, you have to move it manually.
What am I missing? What's the difference between backing up an image as opposed to just pulling a new one with docker run command that you used the first time and moving the data?
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