name: Tune Runner VM
description: |
  Fine tunes the GitHub Runner VM operation system for builds. 
  The tuning currently includes a workaround for 
  "Reverse name lookup is broken for current hostname in ubuntu-latest VMs",
  reported as https://github.com/actions/virtual-environments/issues/3185
runs:
  using: composite
  steps:
    - run: |
        if [[ "$OSTYPE" == "linux-gnu"* ]]; then
            # Ensure that reverse lookups for current hostname are handled properly
            # Add the current IP address, long hostname and short hostname record to /etc/hosts file
            eth0_ip_addr=$(ip addr show eth0 | grep "inet\b" | awk '{print $2}' | cut -d/ -f1)
            hostname_fqdn=$(hostname -f)
            hostname_short=$(hostname -s)
            echo -e "${eth0_ip_addr}\t${hostname_fqdn} ${hostname_short}" | sudo tee -a /etc/hosts
        fi
      shell: bash