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https://github.com/hashicorp/setup-packer

Run HashiCorp Packer as part of your GitHub Actions Workflow
https://github.com/hashicorp/setup-packer

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Run HashiCorp Packer as part of your GitHub Actions Workflow

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# GitHub Action: `setup-packer`

The `hashicorp/setup-packer` Action sets up the [Packer](https://www.packer.io) CLI in your GitHub Actions workflow by adding the `packer` binary to `PATH`.

[![GitHub Action: Self-Test](https://github.com/hashicorp/setup-packer/actions/workflows/actions-self-test.yml/badge.svg?branch=main)](https://github.com/hashicorp/setup-packer/actions/workflows/actions-self-test.yml)

## Table of Contents

* [GitHub Action: `setup-packer`](#github-action-setup-packer)
* [Table of Contents](#table-of-contents)
* [Requirements](#requirements)
* [Usage](#usage)
* [Inputs](#inputs)
* [Outputs](#outputs)
* [Integrating with HCP Packer](#integrating-with-hcp-packer)
* [Author Information](#author-information)
* [License](#license)

## Requirements

This GitHub Actions supports all commands that are available in the `packer` CLI.

The [`build`](https://developer.hashicorp.com/packer/docs/commands/build) command may require access to provider-specific credentials.

Other [environment variables](https://developer.hashicorp.com/packer/docs/commands#environment-variables) (such as `PACKER_LOG`) may be set as normal and will be picked up accordingly.

## Usage

Create a GitHub Actions Workflow file (e.g.: `.github/workflows/packer.yml`):

```yaml
name: packer

on:
push:

env:
PRODUCT_VERSION: "1.10.0" # or: "latest"

jobs:
packer:
runs-on: ubuntu-latest
name: Run Packer
steps:
- name: Checkout
uses: actions/checkout@v4

- name: Setup `packer`
uses: hashicorp/setup-packer@main
id: setup
with:
version: ${{ env.PRODUCT_VERSION }}

- name: Run `packer init`
id: init
run: "packer init ./image.pkr.hcl"

- name: Run `packer validate`
id: validate
run: "packer validate ./image.pkr.hcl"
```

In the above example, the following definitions have been set.

- The event trigger has been set to `push`. For a complete list, see [Events that trigger workflows](https://docs.github.com/en/actions/using-workflows/events-that-trigger-workflows).
- The origin of this GitHub Action has been set as `hashicorp/setup-packer@main`. For newer versions, see the [Releases](https://github.com/hashicorp/setup-packer/releases).
- The version of `packer` to set up has been set as `1.10.0`. For a complete list, see [releases.hashicorp.com](https://releases.hashicorp.com/packer/).
- The Packer manifest to interact with has been set as `./image.pkr.hcl`.

These definitions may require updating to suit your deployment, such as specifying [self-hosted](https://docs.github.com/en/actions/using-workflows/workflow-syntax-for-github-actions#choosing-self-hosted-runners) runners.

Additionally, you may configure [outputs](https://docs.github.com/en/actions/using-workflows/workflow-syntax-for-github-actions#example-defining-outputs-for-a-job) to consume return values from the Action's operations.

## Inputs

This section contains a list of all inputs that may be set for this Action.

- `version` - The version of `packer` to install. Defaults to `latest` if unset.

> [!NOTE]
> To retrieve the `latest` version, this GitHub Action polls the HashiCorp [Releases API](https://api.releases.hashicorp.com/v1/releases/packer) and finds the latest released version of Packer that isn't marked as a pre-release (`is_prerelease`).

## Outputs

This section contains a list of all outputs that can be consumed from this Action.

- `version` - The version of `packer` that was installed.

## Integrating with HCP Packer

To integrate with HCP Packer, add your HCP Client ID and HCP Client secret as environment variables to the Packer build call.

We add an `HCP_PACKER_BUILD_FINGERPRINT` in this example that is based on the workflow run ID, that way it is always unique

We recommend storing these in [GitHub Actions Secrets](https://docs.github.com/en/actions/security-guides/encrypted-secrets#creating-encrypted-secrets-for-a-repository) (as opposed to plain-text).

For more information on using HCP Packer, see the [Getting Started tutorial](https://developer.hashicorp.com/packer/tutorials/hcp-get-started/hcp-push-image-metadata).

```yaml
name: hcp-packer

on:
- push

jobs:
hcp-packer:
runs-on: ubuntu-latest
name: Run Packer
steps:
- name: Checkout
uses: actions/checkout@v4

- name: Setup `packer`
uses: hashicorp/setup-packer@main
id: setup
with:
version: "latest"

- name: Run `packer init`
id: init
run: "packer init ./image.pkr.hcl"

- name: Run `packer validate`
id: validate
run: "packer validate ./image.pkr.hcl"

- name: Build Artifact
run: packer build -color=false -on-error=abort ./image.pkr.hcl
env:
HCP_CLIENT_ID: ${{ secrets.HCP_CLIENT_ID }}
HCP_CLIENT_SECRET: ${{ secrets.HCP_CLIENT_SECRET }}
HCP_PACKER_BUILD_FINGERPRINT: "run.id.${{ github.run_id }}.run.attempt.${{ github.run_attempt }}"
```

## Author Information

This GitHub Action is maintained by the contributors listed on [GitHub](https://github.com/hashicorp/setup-packer/graphs/contributors).

The original code of this repository is based on work done by [Matthew Sanabria](https://github.com/sudomateo) as part of the [setup-packer](https://github.com/sudomateo/setup-packer) GitHub Action.

## License

Licensed under the Apache License, Version 2.0 (the "License").

You may obtain a copy of the License at [apache.org/licenses/LICENSE-2.0](http://www.apache.org/licenses/LICENSE-2.0).

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an _"AS IS"_ basis, without WARRANTIES or conditions of any kind, either express or implied.

See the License for the specific language governing permissions and limitations under the License.