How are docker and packer different? And which one should I prefer when provisioning images?

How are docker and packer different? And which one should I prefer when provisioning images?

docker docker-compose dockerfile packer

docker

Docker image format

docker packer openembedded yocto

docker

How can I convert a Docker image into a (vagrant) VirtualBox box?

virtualbox vagrant docker packer

docker

Difference between hashicorp packer vs linuxkit

docker packer

docker

Packer, Dockramp vs Dockerfile

linux docker kubernetes continuous-integration packer

docker

packer docker builder configure docker in docker image

docker build packer docker-in-docker

docker

Packer provisioning docker with chef-solo gets node name not found error

docker chef-solo packer

docker

Terraform unable to start docker service

docker terraform packer

docker

Default packer builder without using -only option

docker packer

docker

Packer shell provisioning hangs when building Docker container

docker boot2docker packer

docker

How can I create a custom Linux AMI with Packer that accepts user data

docker amazon-ec2 terraform packer user-data

docker