Why define size of docker image? Where does the docker apps reside?

[jang430]

Why is it recommended to start with 10 GB image size? Where does the docker apps get installed? Is it inside that docker image?

[itimpi]

Why is it recommended to start with 10 GB image size? Where does the docker apps get installed? Is it inside that docker image?

Yes - the apps get installed inside the image.  It is only the software that goes into the image - their configuration data and working data are held outside the image.

 

User experience has shown 10GB to be a good size for light to moderate docker use.  It is easy to increase it later, but not so easy to reduce its size (as that requires re-downloading the docker containers you are using which might be resaonably signifcant download).

[jang430]

Thanks itimpi.