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Packer Post Processors

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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."]
}

post-processors {
post-processor "docker-import" {
repository = "anthonyrussano/testpush"
tag = "latest"
}
post-processor "docker-push" {}
}
}

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.

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$ docker images