How does persistence work in Docker?

First lets demonstrate how containers are stateless:

docker run -it busybox

echo 'some text' > file.txt'

cat file.txt

exit

docker run -it busybox

cat file.txt

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Docker Volumes

• Native to Docker

• Managed by the CLI

• Can be shared between containers

docker volume create files
docker volume inspect files

docker run -it -v files:/test busybox

cd test

echo 'some text' > file.txt

cat file.txt

exit

docker run -it -v files:/test busybox

cd test

cat file.txt