Docker hub matching code?

[BrianLakstins]

The docker images on hub.docker.com have a volume for /var/lib/postgresql/data

I can't find any reference in the code to creating a volume for /var/lib/postgresql/data

Are the scripts that create the images on hub.docker.com creating the images based on the code, or am I missing something about the build process?

[BrianLakstins]

Never mind. That volume is from the postgres image you are basing the backup image on. I wonder if there is a "remove volume" type of docker build command that can get rid of it, since it's not needed.

[prodrigestivill]

Duplicate of #53 & #70 .

The source code you are looking is in the parent image (FROM statement) from docker hub official library.