Please help docker-push to AWS ECS private registry

[p]

Hello,

Could someone please help me configure Packer to be able to do a docker-push to an AWS ECS private registry? Let me explain the problem.

The AWS ECS private registry uses a password that expires every twelve hours. An AWS tool allows one to get a new password when the password expires. In the packer file where the post-processor docker-push is defined exists a field called login_password. It is this field that uses that 12 hour password. I am looking for a way to automatically update that password in the packer file possibly by interpolating a variable to fill in the login_password field. I can't seem to find a way to do this.

While I can simply write shell scripts using regex to target the field, I was hoping there would be an elegant way built into Packer to accomplish this? Thank you.

P

[Rickard von Essen]

This works for me:

eval $(aws --profile=packer-demo ecr get-login); packer build ecr_docker.json

With the following template - ecr_docker.json:
{
"builders": [
{
"type": "docker",
"image": "alpine",
"run_command": ["-d", "-i", "-t", "{{.Image}}", "/bin/ash"],
"commit": true
}
],
"post-processors": [
[
{
"type": "docker-tag",
"repository": "965990659467.dkr.ecr.eu-central-1.amazonaws.com/packer-test",
"tag": "latest"
},
{
"type": "docker-push",
"login": false,
"login_server": "https://965990659467.dkr.ecr.eu-central-1.amazonaws.com/packer-test"
}
]
]
}

But it should be fairly easy to extend docker-push postprocessor to support ECR. PR's are welcome.

[Rickard von Essen]

I added "native" support for ECR, see https://github.com/mitchellh/packer/pull/3856

[p]

Thanks for this advice. I figured out this exact same thing. So, my initial requirements have been met. Now it's time for me to figure out the pull portion. Thank you.

[Rickard von Essen]

This works for me:

eval $(aws --profile=packer-demo ecr get-login); packer build ecr_docker.json

With the following template - ecr_docker.json:

{

  "builders": [

    {

      "type": "docker",

      "image": "alpine",

      "run_command": ["-d", "-i", "-t", "{{.Image}}", "/bin/ash"],

      "commit": true

    }

  ],

  "post-processors": [

    [

      {

        "type": "docker-tag",

        "repository": "965990659467.dkr.ecr.eu-central-1.amazonaws.com/packer-test",

        "tag": "latest"

      },

      {

        "type": "docker-push",

        "login": false,

        "login_server": "https://965990659467.dkr.ecr.eu-central-1.amazonaws.com/packer-test"

      }

    ]

  ]

}

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[Rickard von Essen]

But it should be fairly easy to extend docker-push postprocessor to support ECR. PR's are welcome.

[Rickard von Essen]

I added "native" support for ECR, see https://github.com/mitchellh/packer/pull/3856

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GitHub Issues: https://github.com/mitchellh/packer/issues
IRC: #packer-tool on Freenode
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