GitHub Action: Supported distribution release matrix generator

Generate a GitHub Action matrix for all supported releases of Debian/Ubuntu.

Inputs

Variable	Default	Description
distros	"debian,ubuntu"	Comma-separated list of distros to include in the matrix
include-lts	true	Set to true if distro release still supported by LTS should be included
include-extended-lts	false	Set to true if distro release still supported by extended LTS should be included

Usage

Here is a basic example showing how to generate a dynamic matrix and use it to run a number of docker containers on different releases:

---
name: Tests

on:
  pull_request:
    branches:
      - main

jobs:
  generate-matrix:
    name: Generate matrix
    runs-on: ubuntu-latest
    outputs:
      matrix: ${{ steps.generate-matrix.outputs.matrix }}
    steps:
      - name: Generate matrix
        id: generate-matrix
        uses: wandnz/action-supported-distro-releases@v1

  test:
    name: Run tests
    runs-on: ubuntu-latest
    needs: generate-matrix
    container:
      image: ${{ matrix.target }}
    strategy:
      matrix:
        target: ${{ fromJson(needs.generate-matrix.outputs.matrix) }}
    steps:
      - name: Debug
        run: |
          . /etc/os-release
          echo "Hello from ${PRETTY_NAME}"

An example of providing configuration to this action (e.g excluding releases which have reached EOL but still under LTS support), would look like this:

jobs:
  generate-matrix:
    name: Generate matrix
    runs-on: ubuntu-latest
    outputs:
      matrix: ${{ steps.generate-matrix.outputs.matrix }}
    steps:
      - name: Generate matrix
        id: generate-matrix
        uses: wandnz/action-supported-distro-releases@v1
        with:
          include-lts: false