Docker container not save data when rebuild images

[meeeeeeeee]

why when i update code into github and rebuild image, data lost all
.

1. create image tag : h/test:v1.0
2. run docker container
3. push custom code to github
4. stop container, remove container
5. build newimage with tag: h/test:v1.1
6. run container
7. all data lossing

all volume i do not remove or change name

[meeeeeeeee]

anyone here, tks