A Drone plugin to run packer builds.

pipeline:
  build:
    image: kayako/drone-packer
    include_files: [ config/common.json, config/<target> ]
    target: base.json
    variables:
        name: packer
        version: 33

• account: AWS account ID in which to assume the role. Instance IAM role will be used by default
• use_ci_role: IAM role name to use. Defaults to ci. Ignored if account is not provided
• target: Name of target packer template to execute
• variables: Optional variables to pass to packer build command
• secret_variables: List of variables to be read from environment
• include_files: List of variable files to include in build
• except: List of builders to skip
• only: List of builders to run

• target must be the name of the target template. target can be provided as plugin parameter in .drone.yml file or it can be passed as deployment parameter using either drone CLI or github deployment api.
• variables is optional and must be a flat dictionary. An intact JSON representation of the dictionary will be passed to packer.
• include_files is an optional list of path to JSON files relative to build directory. It can contain <target> literal string which will be replaced by actual target name as provided to the plugin.
• except and only, if provided, must be valid Yaml list types.
• secret_variables is an optional list of variable names that should be read from environment. Make sure to whitelist the secrets in drone configuration file

Following configuration

pipeline:
  build:
    image: kayako/drone-packer
    include_files: [ config/common.json, config/<target> ]
    target: base.json
    variables:
        name: packer
        version: 33
    secret_variables: [ vpc_id, subnet_id ]
    secrets: [ vpc_id, subnet_id ]

will create a temporary file build_variables.json containing the variables:

{
  "name": "packer",
  "version": 33
}

and run the command without line breaks.

packer build --var-file build_variables.json \
    --var-file config/common.json \
    --var-file config/base.json \
    --var 'vpc_id=vpc-id-in-env' \
    --var 'subnet_id=subnet-id-in-env' \
    base.json