dagger-for-github/action.yml

name: "Dagger for GitHub"
description: "Run dagger commands in Github Actions"
inputs:
  version:
    description: "Dagger Version"
    required: false
    default: "0.13.6"
  commit:
    description: "Dagger Dev Commit"
    required: false
    default: ""
  dagger-flags:
    description: "Dagger CLI Flags"
    required: false
    default: "--progress plain"
  verb:
    description: "CLI verb (call, run, download, up, functions, shell, query)"
    required: false
    default: "call"
  workdir:
    description: "The working directory in which to run the Dagger CLI"
    required: false
    default: "."
  cloud-token:
    description: "Dagger Cloud Token"
    required: false
    default: ""
  module:
    description: "Dagger module to call. Local or Git"
    required: false
    default: ""
  args:
    description: "Arguments to pass to CLI"
    required: false
    default: ""
  engine-stop:
    description: "Whether to stop the Dagger Engine after this run"
    required: false
    default: "true"
outputs:
  output:
    description: "Job output"
    value: ${{ steps.exec.outputs.stdout }}
runs:
  using: "composite"
  steps:
    - shell: bash
      run: |
        set -o pipefail
        # Fallback to /usr/local for backwards compatability
        prefix_dir="${RUNNER_TEMP:-/usr/local}"
        # Ensure the dir is writable otherwise fallback to tmpdir
        if [[ ! -d "$prefix_dir" ]] || [[ ! -w "$prefix_dir" ]]; then
            prefix_dir="$(mktemp -d)"
        fi
        printf '%s/bin' "$prefix_dir" >> $GITHUB_PATH

        # If the dagger version is 'latest', set the version back to an empty
        # string. This allows the install script to detect and install the latest
        # version itself
        VERSION=${{ inputs.version }}
        if [[ "$VERSION" == "latest" ]]; then
          VERSION=
        fi

        COMMIT=${{ inputs.commit }}

        # The install.sh script creates path ${prefix_dir}/bin
        curl -fsS https://dl.dagger.io/dagger/install.sh \
        | BIN_DIR=${prefix_dir}/bin DAGGER_VERSION="$VERSION" DAGGER_COMMIT="$COMMIT" sh

    - id: exec
      shell: bash
      env:
        INPUT_MODULE: ${{ inputs.module }}
      run: |
        tmpout=$(mktemp)
        tmperr=$(mktemp)
      
        # Run the command and capture stdout and stderr separately
        cd ${{ inputs.workdir }} && {
          DAGGER_CLOUD_TOKEN=${{ inputs.cloud-token }} \
          dagger \
          ${{ inputs.dagger-flags }} \
          ${{ inputs.verb }} \
          ${INPUT_MODULE:+-m $INPUT_MODULE} \
          ${{ inputs.args }}
        } >"${tmpout}" 2>"${tmperr}"  # Redirect stdout to tmpout and stderr to tmperr
      
        # Send stdout to GITHUB_OUTPUT
        (echo -n "stdout=" && cat "${tmpout}") >> "$GITHUB_OUTPUT"
        
        # Append formatted stdout to GITHUB_STEP_SUMMARY
        {
          echo "### Dagger stdout"
          echo ""
          echo "<pre><code>"
          cat "${tmpout}"
          echo "</code></pre>"
          echo ""
        } >> $GITHUB_STEP_SUMMARY

        # Append formatted stderr to GITHUB_STEP_SUMMARY
        {
          echo "### Dagger stderr"
          echo ""
          echo "<pre><code>"
          cat "${tmperr}"
          echo "</code></pre>"
          echo ""
        } >> $GITHUB_STEP_SUMMARY

    - if: inputs.engine-stop == 'true'
      shell: bash
      run: |
        mapfile -t containers < <(docker ps --filter name="dagger-engine-*" -q)
        if [[ "${#containers[@]}" -gt 0 ]]; then
          docker stop -t 300 "${containers[@]}";
        fi