docker 处理 tar 文件时出错（退出状态 1）：设备上没有剩余空间

Question

I'm continuously getting this the following error when try to build a docker image:

Step 6/8 : COPY . /app
Error processing tar file(exit status 1): write /app/.git/objects/81/4f44ad8c3bef33a0bb0729bee8f251a327d9a8: no space left on device 

this is sort of fixed if I use:

docker system prune

I'm delete the previous image using:

docker rmi <my_image> 

The problem is that this makes the whole testing very tedious, since I have to create the images from scratch after each change.

REPOSITORY                  TAG                 IMAGE ID            CREATED             SIZE
my_image   latest              12b2499ac23d        52 minutes ago      6.67GB

That is the image I have to delete and create each time. I still have space left on the machine so really not finding what is the issue here:

EDIT

from df -ih

Answer 1

you can use a small but useful command:

 docker image prune

to delete all the unused container.It will free your needed memory.

Answer 2

Maybe you need to exclude all unnecessary files from the context? https://docs.docker.com/engine/reference/builder/#dockerignore-file