How to force Docker to store images and containers in a specified location?

Question

Docker

I have Ubuntu 18.04 installed on a 128MB SSD. As I worked with Docker, free disk space became critically small. How can I get Docker to store all files in the specified location?

Answer 1

/etc/docker/daemon.json , a parameter data-root(you only need to specify it, and not copy it entirely from the docks). Lossless shift process:

1. Create this config
   
2. Stop docker
   
3. Move the /var/lib/docker data to the directory specified in the config
   
4. lift docker