chore: add option to disable the Flagsmith UI in the API containers. (#…

…3097)

api/app/settings/common.py

@@ -876,7 +876,10 @@
 
 DISABLE_WEBHOOKS = env.bool("DISABLE_WEBHOOKS", False)
 
-SERVE_FE_ASSETS = os.path.exists(BASE_DIR + "/app/templates/webpack/index.html")
+DISABLE_FLAGSMITH_UI = env.bool("DISABLE_FLAGSMITH_UI", default=False)
+SERVE_FE_ASSETS = not DISABLE_FLAGSMITH_UI and os.path.exists(
+    BASE_DIR + "/app/templates/webpack/index.html"
+)
 
 # Used to configure the number of application proxies that the API runs behind
 NUM_PROXIES = env.int("NUM_PROXIES", 1)

docs/docs/deployment/hosting/locally-api.md

@@ -243,6 +243,8 @@ the below variables will be ignored.
 - `FLAGSMITH_DOMAIN`: A custom domain for URLs pointing to your Flagsmith instance in email notifications. Note: if set,
   the domain provided during [initial configuration](#environments-with-no-direct-console-access-eg-heroku-ecs) will be
   ignored.
+- `DISABLE_FLAGSMITH_UI`: Disable the Flagsmith UI which can be rendered by the API containers in a single container
+  environment. Use `True` to disable, defaults to `False`.
 
 #### Security Environment Variables