- [How to Build Immutable Infrastructure with Packer and CircleCI Workflows](https://circleci.com/blog/how-to-build-immutable-infrastructure-with-packer-and-circleci-workflows/)
- [Using Packer and Ansible to Build Immutable Infrastructure in CodeShip](https://blog.codeship.com/packer-ansible/)
The majority of the [Packer Builders](/docs/builders) can run in
a container or VM, a common model used by most CI/CD services. However, some
builders may take substantially longer without privilege escalation (like the
[QEMU builder](/docs/builders/qemu) for
The majority of the [Packer Builders](/docs/builders) can run just fine in a
container, a common model used by most CI/CD services. However, while it is
possible to run many builders in containers or nested virtualization, this may
require advanced configuration; examples include the [QEMU
builder](/docs/builders/qemu) for
[KVM](https://www.linux-kvm.org/page/Main_Page) and
[Xen](https://www.xenproject.org/)).
[Xen](https://www.xenproject.org/)), or the [VirtualBox
builder](/docs/builders/virtualbox) for OVA or OVF virtual machines.
Ryan J. Price
5 years ago