action.yml

# https://help.github.com/en/articles/metadata-syntax-for-github-actions
name: Docker Compose Setup
description: Install Docker Compose
branding:
  icon: anchor
  color: blue

inputs:
  version:
    description: 'Compose release (example: v2.2.0)'
    required: false
    default: v2.40.0
  legacy:
    description: 'Also install as legacy "docker-compose"'
    required: false
    default: true
  artifact-url:
    description: 'Direct URL to docker-compose artifact (zip file)'
    required: false
    default: ''

runs:
  using: 'composite'
  steps:
    - name: instal
      shell: bash
      run: |
        set -x
        set -e
        arch="$(uname)-$(uname -m)"
        flavor=$(echo $arch | tr '[:upper:]' '[:lower:]' )

        if [[ -n "${{ inputs.artifact-url }}" ]]; then
          DOWNLOAD_URL="${{ inputs.artifact-url }}"
          echo "Download Compose from artifact URL: ${DOWNLOAD_URL}"
          mkdir -p ~/.docker/cli-plugins/
          if [[ "$DOWNLOAD_URL" == *.zip ]]; then
            curl -fsSL "$DOWNLOAD_URL" -o /tmp/compose-artifact.zip
            unzip -o /tmp/compose-artifact.zip -d /tmp/
            find /tmp -name "docker-compose-linux-*" -type f ! -name "*.json" -exec mv {} ~/.docker/cli-plugins/docker-compose \; 2>/dev/null || \
            find /tmp -name "compose-linux-*" -type f ! -name "*.json" -exec mv {} ~/.docker/cli-plugins/docker-compose \;
            rm -f /tmp/compose-artifact.zip
          else
            curl -fsSL "$DOWNLOAD_URL" -o ~/.docker/cli-plugins/docker-compose
          fi
        else
          DOWNLOAD_URL="https://github.com/docker/compose/releases/download/${{ inputs.version }}/docker-compose-${flavor}"
          if [[ "${{ inputs.version }}" == "latest" ]]; then
            DOWNLOAD_URL=$(curl -fL https://api.github.com/repos/docker/compose/releases/latest | jq -r '.assets[] | select(.name == "docker-compose-linux-x86_64") | .browser_download_url')
          fi
          echo "Download Compose ${{ inputs.version }} for ${flavor} from ${DOWNLOAD_URL}"
          mkdir -p ~/.docker/cli-plugins/
          test -f ~/.docker/cli-plugins/docker-compose || curl -fsSL "$DOWNLOAD_URL" -o ~/.docker/cli-plugins/docker-compose
        fi
        
        chmod +x ~/.docker/cli-plugins/docker-compose
    - name: alias docker-compose
      if: ${{ inputs.legacy }}
      shell: bash
      run: |
        mkdir -p ~/.local/bin/
        ln -fs ~/.docker/cli-plugins/docker-compose ~/.local/bin/docker-compose
        echo "${HOME}/.local/bin" >> $GITHUB_PATH