Most appropriate container for a data only container?

Question

What is the most appropriate (smallest, simplest) container to use for a data only Docker container?

In the documentation they use the training/postgres container. Howe

Answer 1

I recommend the tianon/true image from this collection of dockerfiles. At 125 Byte, It is smaller than busybox based images:

REPOSITORY                 TAG                 IMAGE ID            CREATED             VIRTUAL SIZE
tianon/true                latest              724d63a6172d        35 hours ago        125 B

A container based on this image exits immediately which is appropriate for a storage only container.