Update probot configuration for production

Change-type: patch
Signed-off-by: Kyle Harding <kyle@balena.io>

Dockerfile

@@ -8,6 +8,7 @@ RUN HUSKY=0 npm ci --omit=dev && npm cache clean --force
 
 COPY . ./
 
+# https://probot.github.io/docs/configuration/
 ENV NODE_ENV="production"
 
 RUN npm run build

README.md

@@ -81,23 +81,15 @@ docker run --env-file .env deploynaut
 
 ## Environment Variables
 
+Probot configuration variables are documented [here](https://probot.github.io/docs/configuration/).
+
+Additional environment variables specific to this app:
+
 - `BYPASS_ACTORS`: A comma-separated list of GitHub user IDs to bypass the approval process.
 
   For users, you can find the ID by visiting `https://api.github.com/users/<username>`
   For apps, you can find the ID by visiting `https://api.github.com/users/<app-name>%5Bbot%5D`
 
-  ```shell
-  # https://api.github.com/users/flowzone-app%5Bbot%5D
-  # https://api.github.com/users/balena-renovate%5Bbot%5D
-  BYPASS_ACTORS=124931076,133977723
-  ```
-
-- `APP_ID`: The ID of the GitHub App.
-- `PRIVATE_KEY`: The private key of the GitHub App.
-- `WEBHOOK_SECRET`: The secret used to verify the authenticity of the webhook.
-- `WEBHOOK_PROXY_URL`: The URL to proxy the webhook to.
-- `LOG_LEVEL`: Defaults to `info`.
-
 ## Contributing
 
 If you have suggestions for how deploynaut could be improved, or want to report a bug, open an issue! We'd love all and any contributions.