docker-entrypoint.sh

#!/usr/bin/env sh

set -e

executeYeomanCommand() {
  command_with_params=$1

  # cleanup yeoman files after execution
  # shellcheck disable=SC2064
  trap "rm -rf \"$yeoman_target_dir/.cache\" \"$yeoman_target_dir/.config\" \"$yeoman_target_dir/.npm\"" EXIT

  if [ "$(id -u)" = 0 ]; then
    # root user detected, running as yeoman user
    sudo chown -R yeoman:yeoman "$yeoman_target_dir"
    # shellcheck disable=SC2086
    (cd "$yeoman_target_dir" && sudo -E -u yeoman yo --no-insight $command_with_params)
    sudo chown -R root:root "$yeoman_target_dir"
  else
    # shellcheck disable=SC2086
    (cd "$yeoman_target_dir" && yo --no-insight $command_with_params)
  fi
}

formatGeneratedFiles() {
  # Additional script and yaml formatting
  #
  # Why? Yeoman output may contain some additional whitespaces or the formatting
  # might not be ideal. Keeping those whitespaces, however, might be useful
  # in templates to improve the brevity. That's why we need additional formatting.
  # Since the templates should obey good practices, we don't use linters here
  # (i.e. shellcheck and yamllint).
  echo "Formatting generated files"
  shfmt -i=2 -l -w "$yeoman_target_dir" >/dev/null

  for yaml in "$yeoman_target_dir"/**/*.yaml; do

    # the expansion failed, no yaml files found
    if [ "$yaml" = "$yeoman_target_dir/**/*.yaml" ]; then
      break
    fi

    # remove trailing spaces
    sed --in-place 's/[ \t]*$//' "$yaml"

    # remove duplicated empty/blank lines
    content="$(awk -v RS= -v ORS='\n\n' '1' "$yaml")"
    echo "$content" >"$yaml"
  done
}

yeoman_target_dir="/network/workspace"
yeoman_command=${1:-Fablo:setup-network}

# This part of output will be replaces with empty line. It breaks parsing of yeoman generator output.
# See also: https://github.com/yeoman/generator/issues/1294
annoying_yeoman_info="No change to package.json was detected. No package manager install will be executed."

# Execute the command
executeYeomanCommand "$yeoman_command" 2>&1 | sed "s/$annoying_yeoman_info//g"

if echo "$yeoman_command" | grep "setup-network"; then
  formatGeneratedFiles
fi