It is possible to create images from scratch using Packer by downloading an ISO from the internet.
Aim: to create Docker images by downloading an ISO using Packer
Attempts
Attempt 1
It is possible to import a Docker image
[username@hostname]$ cat docker.json
{
"builders":[{
"type": "docker",
"image": "ubuntu",
"export_path": "image.tar"
}]
}
using Packer:
[username@hostname packer]$ packer build docker.json
docker output will be in this color.
==> docker: Creating a temporary directory for sharing data...
==> docker: Pulling Docker image: ubuntu
==> docker: Starting docker container...
==> docker: Exporting the container
==> docker: Killing the container: 6e0e5488d8b4f97667123ea965a561c91122f3efc6ef4b86a7c40560714d6577
Build 'docker' finished.
==> Builds finished. The artifacts of successful builds are:
--> docker: Exported Docker file: image.tar
Attempt 2
Changing the builder type of a packer.json that is used to create a virtualbox image to docker results in:
[username@hostname]$ packer build docker-scratch.json
docker output will be in this color.
15 error(s) occurred:
* unknown configuration key: "boot_command"
* unknown configuration key: "boot_wait"
...
* unknown configuration key: "vboxmanage"
* unknown configuration key: "virtualbox_version_file"
Problem
However, if a docker image needs to be created several base images could be downloaded, but is it also possible to download an ISO and to transform that to a docker image?
Reference
