fixed failing deployments in ci/cd

Author: michaelhyi

.github/workflows/main.yml

@@ -12,6 +12,7 @@ on:
 permissions:
   id-token: write
   contents: read
+  deployments: write
 
 jobs:
   deploy:

README.md

@@ -16,4 +16,10 @@ pip install -r requirements.txt
 flask run -p 8080
 ```
 
-## Deployment
+## Deployment
+
+Bit Bot is deployed for free via Azure App Services. The Github Actions pipeline
+builds and pushes a Docker image, then triggers the Azure service to pull and
+restart the container.
+
+Environment variables must be added manually to the App Service.