This page describes how to mount ISO image inside a container.
Preparations
Configure FUSE in container as described in FUSE
Setup
Install packages 'fuseiso' and 'fuse' into container. Package names may vary on different Linux distributions.
F.e. for Debian and Ubuntu you should install 'fuseiso' and 'fuse-utils' packages (available in repository),
for RHEL3/4/5 and CentOS3/4/5 you may use DAG's packages 'fuse-iso' and 'fuse'
Mount ISO image:
# fuseiso image.iso /mnt/disk