Add ability to override the endpoint for the openai api in the event you want to proxy it. Also made the configs settable via the env.

Author: jackmingo

README.md

@@ -53,6 +53,17 @@ venv\Scripts\activate
 pip install -r requirements.txt
 ```
 
+### Configure the Application
+To configure the application, there are a few properties that can be set either via the environment or via config.json.  The environment variable takes priority.
+
+| Field               | Env Variable    | config.json    | examples                                           |
+|---------------------|-----------------|----------------|----------------------------------------------------|
+| The OpenAI Api Key  | OPENAI_API_KEY  | openai_key     | sk-...                                             
+| The OpenAI Base URL | OPENAI_API_BASE | openai_api_key | https://api.openai.com <br> http://my-reverse-proxy/ 
+
+Use the Base URL if you need to run your queries through a reverse proxy (like [this one](https://github.com/stulzq/azure-openai-proxy) which will run your queries through Azure's OpenAI endpoints )
+
+
 ### Running the Application
 To run the application, make sure the virtual environment is active and run the following command:
 ```
@@ -64,3 +75,4 @@ The easiest way to run ChatGPT Clone is by using docker
 ```
 docker-compose up
 ```
+

config.json

@@ -4,5 +4,7 @@
         "port" : 1338,
         "debug": false
     },
-    "openai_key": "sk-..."
+    "openai_key": "sk-...",
+
+    "openai_api_base": "https://api.openai.com"
 }

server/backend.py

@@ -6,14 +6,16 @@
 from requests import get
 from requests import post 
 from json     import loads
+import os
 
 from server.config import special_instructions
 
 
 class Backend_Api:
     def __init__(self, app, config: dict) -> None:
         self.app = app
-        self.openai_key = config['openai_key']
+        self.openai_key = os.environ["OPENAI_API_KEY"] or config['openai_key']
+        self.openai_api_base = os.environ["OPENAI_API_BASE"] or config['openai_api_base']
         self.routes = {
             '/backend-api/v2/conversation': {
                 'function': self._conversation,
@@ -52,7 +54,8 @@ def _conversation(self):
                 extra + special_instructions[jailbreak] + \
                 _conversation + [prompt]
 
-            gpt_resp = post('https://api.openai.com/v1/chat/completions',
+            url = f"{self.openai_api_base}/v1/chat/completions"
+            gpt_resp = post(url,
                 headers = {'Authorization': 'Bearer %s' % self.openai_key}, 
                 json    = {
                     'model'             : request.json['model'],