Drone melange Plugin

Drone plugin to run melange melange

IMPORTANT:

• This plugin is under development and the parameters are subject to change
• Currently only basic options of melange are supported. Plan to add options on need basis.

Usage

The following settings changes this plugin's behavior,

• config_file: The melange configuration YAML file, path relative to drone pipeline.
• output_dir: The directory where the built packages will be saved. Defaults to $DRONE_WORKSPACE/packages
• archs: The linux architecture for which the packages will be built. Defaults $(uname -m). Valid values are: amd64, arm64.
• signing_key: The signing key that will be used to sign the package. If not provided it will be generated.
• env_file: The environment file that will be preloaded and made available to build environment.

kind: pipeline
type: docker
name: default

steps:
  - name: build image
    image: kameshsampath/melange-drone-plugin
    privileged: true
    settings:
      config_file: melange.yaml
      archs:
        - amd64
        - arm64

IMPORTANT: Since melange spins lightweight containers while building, it is required to run the pipeline as privileged: true

Examples

Checkout examples in folder examples. You need to have drone CLI to execute the examples locally.

Example	Description
All Architectures	Builds packages for all supported architectures, 386, amd64, arm64, arm/v6, arm/v7, ppc64le,riscv64,s390x.
Defaults	Build package for default host architecture uname -m
Multiple Architectures	Builds packages for specific architectures.
Output Directory	Generates the packages in custom directory relative to drone pipeline
Using Signing Key	Build and sign the packages using configured signing key

Building Plugin

The plugin relies on apko and melange for build.

The plugin build relies on:

• crane
• limactl
• taskfile

Start lima-vm environment,

task build_env

Build plugin packages,

task packages

Build plugin container image,

task image

To publish the plugin to remote repository use,

task publish_plugin

Testing

Build plugin container image,

task clean image load

Create .env

cat<<EOF | tee .env
PLUGIN_ARCHS=amd64,arm64
PLUGIN_CONFIG_FILE=melange.yaml
EOF

Create a melange.yaml,

cat<<EOF | tee melange.yaml
---
package:
  name: go-hello-world
  version: 0.0.2
  epoch: 0
  description: "a simple hello world rest api used for demos"
  target-architecture:
    - amd64
    -
  copyright:
    - paths:
        - "*"
      attestation: TODO
      license: Apache License 2.0
  dependencies:
    runtime:
environment:
  contents: {}
  packages:
    - go
pipeline:
  - uses: go/install
    with:
      package: github.com/kameshsampath/go-hello-world
      version: v\${{package.version}}
  - uses: strip
EOF

docker run --privileged --rm \
  --env-file=.env \
  --volume "$PWD:/workspace" \
  kameshsampath/melange-drone-plugin:latest

After the successful build you can can see the packages created in $PWD/dist.