Example:
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| packer {
required_plugins {
docker = {
version = ">= 0.0.7"
source = "github.com/hashicorp/docker"
}
}
}
variable "docker_image" {
type = string
default = "ubuntu:xenial"
}
source "docker" "ubuntu" {
image = var.docker_image
commit = true
}
source "docker" "ubuntu-bionic" {
image = "ubuntu:bionic"
commit = true
}
build {
name = "learn-packer"
sources = [
"source.docker.ubuntu",
"source.docker.ubuntu-bionic",
]
provisioner "shell" {
environment_vars = [
"FOO=hello world",
]
inline = [
"echo Adding file to Docker Container",
"echo \"FOO is $FOO\" > example.txt",
]
}
provisioner "shell" {
inline = ["echo Running ${var.docker_image} Docker image."]
}
}
|
Build
Run through the following Pack commands to build the image(s):
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| Initialize your Packer configuration.
$ packer init .
Format your template.
$ packer fmt .
Validate your template.
$ packer validate .
Build the image.
$ packer .
|
Verify
List all the Docker images to confirm that Packer successfully built your Docker image.
