Google Cloud Functions default environment variables

variables.json

{
  "X_GOOGLE_CODE_LOCATION": "/user_code",
  "WORKER_PORT": "8091",
  "X_GOOGLE_SUPERVISOR_INTERNAL_PORT": "8081",
  "X_GOOGLE_WORKER_PORT": "8091",
  "FUNCTION_IDENTITY": "teretete@appspot.gserviceaccount.com",
  "X_GOOGLE_LOAD_ON_START": "false",
  "GCLOUD_PROJECT": "project-id",
  "X_GOOGLE_FUNCTION_REGION": "us-central1",
  "FUNCTION_NAME": "function-name",
  "X_GOOGLE_FUNCTION_MEMORY_MB": "256",
  "SUPERVISOR_HOSTNAME": "169.254.8.129",
  "X_GOOGLE_GCLOUD_PROJECT": "project-id",
  "PATH": "/usr/local/bin:/usr/bin:/bin",
  "FUNCTION_REGION": "us-central1",
  "PWD": "/user_code",
  "FUNCTION_TRIGGER_TYPE": "HTTP_TRIGGER",
  "FUNCTION_TIMEOUT_SEC": "60",
  "X_GOOGLE_FUNCTION_TRIGGER_TYPE": "HTTP_TRIGGER",
  "NODE_ENV": "production",
  "SHLVL": "1",
  "X_GOOGLE_FUNCTION_NAME": "function-name",
  "X_GOOGLE_ENTRY_POINT": "function-name",
  "X_GOOGLE_FUNCTION_IDENTITY": "common-wealth-102030@appspot.gserviceaccount.com",
  "DEBIAN_FRONTEND": "noninteractive",
  "CODE_LOCATION": "/user_code",
  "X_GOOGLE_GCP_PROJECT": "project-id",
  "GCP_PROJECT": "project-id",
  "FUNCTION_MEMORY_MB": "256",
  "PORT": "8080",
  "X_GOOGLE_SUPERVISOR_HOSTNAME": "an ipv4 address",
  "SUPERVISOR_INTERNAL_PORT": "8081",
  "X_GOOGLE_FUNCTION_TIMEOUT_SEC": "60",
  "ENTRY_POINT": "function-name",
  "OLDPWD": "/var/tmp/worker/",
  "_": "/usr/bin/env",
  "HOME": "/tmp"
}