add .env.example to docker

Author: ashleybisram

examples/docker/.env.example

@@ -0,0 +1,14 @@
+# **NOTE**: Ensure that there are no quotes surrounding any of the keys and values.
+
+CHRONOS_DB="MongoDB or PostgreSQL"
+CHRONOS_URI="The URI to the desired MongoDB or PostgreSQL database to save health metrics via Chronos"
+CHRONOS_GRAFANA_API_KEY=Bearer "[the access token you created in above section (Grafana API Key)]"
+
+MONGO_URI_AUTH="A MongoDB URI for the auth server microservice to use"
+MONGO_URI_ITEMS="A MongoDB URI for the items server microservice to use"
+MONGO_URI_INVENTORY="A MongoDB URI for the inventory server microservice to use"
+MONGO_URI_ORDERS="A MongoDB URI for the orders server microservice to use"
+
+# A random string used to sign and verify JSON Web Tokens used by the auth service - the random string provided will work
+JWT_KEY=16a8dcb7e3445392b8124f82a451fb2c1c42a1ad4d599e43ebaf4cbbad8c7d59
+JWT_LIFETIME="The time-to-expiration of the JSON Web Token used by the auth service - this is set to `1d` in `sample.env` meaning user authentication is valid for 1 day"

examples/docker/README.md

@@ -39,7 +39,7 @@ For additional details on how Chronos works this example, please review the Dock
 
 Peform the following steps in each of the _Auth_, _Items_, _Inventory_, _Orders_, _Client_, and _Event-Bus_ directories
 
-1. Add a `.env` file to each of _Auth_, _Items_, _Inventory_, _Orders_, _Event-Bus_, and _Client_ folders with the following key/value pairs (a `sample.env` file is provided in the `/examples/docker` directory):
+1. Add a `.env` file to each of _Auth_, _Items_, _Inventory_, _Orders_, _Event-Bus_, and _Client_ folders with the following key/value pairs (a `.env.example` file is provided in the `/examples/docker` directory):
 
 - **NOTE**: Ensure that there are no quotes surrounding any of the keys and values.