Two containers are running: worker, which has already changed some files, and scratch, an idle Alpine container. Find out what each change does and how long it lasts.

See what worker changed compared to its image:

Write a file into scratch:

docker exec scratch sh -c 'echo draft 1 > /notes.txt'
docker diff scratch

Stop and start scratch, then look for the file again:

docker stop scratch
docker start scratch
docker exec scratch cat /notes.txt

Remove scratch, then start a fresh container from the same image and look once more:

docker rm -f scratch
docker run --rm alpine:3.20 cat /notes.txt