What is the default location for included files when building a docker image?

Question

derrend@laptop ~/topdir $ docker version
Client version: 1.7.1
Client API version: 1.19
Go version (client): go1.4.2
Git commit (client): 786b29d
OS/Arch (client): l         


        

Answer 1

Those files are not part of the built (end-result) image.

They are part of the build context passed to the daemon during the build process, to be used by Dockerfile directives like ADD or COPY or RUN.

A build’s context is the files located in the specified PATH or URL

For example, run this command to use a directory called docker in the branch container:

$ docker build https://github.com/docker/rootfs.git#container:docker

This is managed by Context and ModifiableContext.