act/pkg/runner/testdata/container-hostname/push.yml

name: container-hostname
on: push

defaults:
  run:
    shell: bash

jobs:
  with-hostname:
    runs-on: ubuntu-latest
    container:
      image: node:16-buster-slim
      options: "--hostname my.host.local --user 100:101"
    steps:
      - run: |
          echo "UID: $(id -u)"
          echo "GID: $(id -g)"
          echo "HOST: $(uname -n)"
          [[ "$(id -u)" == "100" ]] && [[ "$(id -g)" == "101" ]] && [[ "$(uname -n)" == "my.host.local" ]]

  default-hostname:
    runs-on: ubuntu-latest
    container:
      image: node:16-buster-slim
    steps:
      - run: |
          echo "UID: $(id -u)"
          echo "GID: $(id -g)"
          echo "HOST: $(uname -n)"
          [[ "$(id -u)" == "0" ]] && [[ "$(id -g)" == "0" ]] && [[ $(uname -n) ]] && [[ "$(uname -n)" != "my.host.local" ]]