chore: clearer message for errors-only mode (#3487)

Author: aldy505

.env

@@ -1,4 +1,7 @@
 COMPOSE_PROJECT_NAME=sentry-self-hosted
+# Set COMPOSE_PROFILES to "feature-complete" to enable all features
+# To enable errors monitoring only, set COMPOSE_PROFILES=errors-only
+# See https://develop.sentry.dev/self-hosted/experimental/errors-only/
 COMPOSE_PROFILES=feature-complete
 SENTRY_EVENT_RETENTION_DAYS=90
 # You can either use a port number or an IP:PORT combo for SENTRY_BIND

sentry/sentry.conf.example.py

@@ -72,6 +72,18 @@ def get_internal_network():
     env("SENTRY_EVENT_RETENTION_DAYS", "90")
 )
 
+# Self-hosted Sentry infamously has a lot of Docker containers required to make
+# all the features work. Oftentimes, users don't use the full feature set that
+# requires all the containers. This is a way to enable only the error monitoring
+# feature which also reduces the amount of containers required to run Sentry.
+#
+# To make Sentry work with all features, set `COMPOSE_PROFILES` to `feature-complete`
+# in your `.env` file. To enable only the error monitoring feature, set
+# `COMPOSE_PROFILES` to `errors-only`.
+#
+# See https://develop.sentry.dev/self-hosted/experimental/errors-only/
+SENTRY_SELF_HOSTED_ERRORS_ONLY = env("COMPOSE_PROFILES") != "feature-complete"
+
 #########
 # Redis #
 #########
@@ -373,10 +385,6 @@ def get_internal_network():
 # if you're using it directly like a CDN instead of using the loader script.
 JS_SDK_LOADER_DEFAULT_SDK_URL = "https://browser.sentry-cdn.com/%s/bundle%s.min.js"
 
-
-# If you would like to use self-hosted Sentry with only errors enabled, please set this
-SENTRY_SELF_HOSTED_ERRORS_ONLY = env("COMPOSE_PROFILES") != "feature-complete"
-
 #####################
 # Insights Settings #
 #####################