Sections

multiple sections with the same name can be included and will be appended to one another during the build process.

`%setup`

Executes the commands on the host system after base operating system is installed in the container.
This section is usually not used as it is dangerous.

`%files`

This section is used to copy files from host system to container. Also, from previous stage specified.
%files section is executed before %post so that files are available while build process in %post.
source can be a path from host system or path in previous stage if specified. destination is the path in the container.
- if destination is not specified, source path is used for destination.

# copying file from host to container
%files
/from-host /to-container

# copying file from previous stage to current container
%files prev_stage
/from /to-container