Format YAML map as docker cli env vars

yaml-to-e.sh

yq -Mrj ' .envVars as $e | $e | keys | .[] | "-e \(.)=\($e[.]) "' deployment/values.yaml

function envvars() {
  local selector=$1; shift
  local files=($@)

  if [[ -z $files ]]; then
    files="${selector}"
    selector=".envVars"
  fi

  local merge_string='.[0]'

  local num_elements=$((${#files[@]}-1))

  if [[ $num_elements -gt 0 ]]; then
	  for i in $(seq $num_elements); do
	  	merge_string="$merge_string * .[$i]"
	  done
  fi

  yq -s "$merge_string" $files | yq -Mrj $selector' as $e | $e | keys | .[] | "-e \(.)=\($e[.]) "'
}