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GitHub Action: Packer

GitHub Action for running Packer commands.

Table of Contents

Usage

Add the Action to your GitHub Workflow like so:

---

name: Packer

on:
  push:

jobs:
  packer:
    runs-on: ubuntu-latest
    name: packer

    steps:
      - name: Checkout Repository
        uses: actions/checkout@v2

      # fix backwards incompatibilities in template
      - name: Fix Template
        uses: hashicorp/packer-github-actions@master
        with:
          command: fix

      # validate templates
      - name: Validate Template
        uses: hashicorp/packer-github-actions@master
        with:
          command: validate
          arguments: -syntax-only
          target: packer.pkr.hcl

      # build artifact
      - name: Build Artifact
        uses: hashicorp/packer-github-actions@master
        with:
          command: build
          arguments: "-color=false -on-error=abort"
          target: packer.pkr.hcl
        env:
          PACKER_LOG: 1
          HCP_CLIENT_ID: ${{ secrets.HCP_CLIENT_ID }}
          HCP_CLIENT_SECRET: ${{ secrets.HCP_CLIENT_SECRET }}

      # additional steps to process artifacts

Inputs

Name Description Required Default
command command to execute yes
arguments arguments for command no
target file(s) or directory to target no .

command

command supports the following subset of Packer CLI commands:

  • init to download Packer plugin binaries
  • build to generate a set of artifacts from a template
  • fix to find and correct backwards incompatible stanzas in a template
  • validate to validate the syntax and configuration of a template

Other CLI commands (console, inspect and version) are technically supported, but have limited utility in a GitHub Actions Workflow, due to their interactive nature.

arguments

arguments supports all options available for the respective command.

The arguments must be provided as a single string. Multiple arguments should be concatenated like so: -color=false -on-error=abort

target

target supports a string consisting of one or more file or directory paths:

   # single file
   target: artifacts.pkr.hcl

   # multiple files, separated by whitespace
   target: artifacts.pkr.hcl packer.pkr.hcl

   # working directory
   target: .

The Action will iterate over each file and run each command, separately.

Detailed logs

Packer has an option to enable more detailed logs by setting the PACKER_LOG environment variable. Any value other than "" (empty string) and "0", will cause detailed logs to appear on stderr.

To set PACKER_LOG=1, simply define the environment variable in the step configuration like:

  # build artifact
  - name: Build Artifact
    uses: hashicorp/packer-github-actions@master
    with:
      command: build
      arguments: "-color=false -on-error=abort"
      target: packer.pkr.hcl
    env:
      PACKER_LOG: 1

Notes

  • To enable debug logging, create a secret named ACTIONS_STEP_DEBUG with the value true. See here for more information.

Author Information

This module is maintained by the contributors listed on GitHub.

Development of this module was sponsored by Operate Happy.

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.

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.

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