Improve example config

List default settings and clearly display options.

config.scfg

@@ -2,21 +2,32 @@
 # This directive can be specified multiple times in the main configuration, 
 # but only the last occurrence of a setting will be used. Settings from
 # the main configuration will take precedence.
+# Default: unset
 include /etc/ntfy-alertmanager/ntfy.scfg
 # Public facing base URL of the service (e.g. https://ntfy-alertmanager.example.com)
 # This setting is required for the "Silence" feature.
+# Default: ""
 base-url https://ntfy-alertmanager.example.com
 # http listen address
+# Default: 127.0.0.1:8080
 http-address :8080
-# Log level (either debug, info, warning, error)
+# Log level
+# Options: debug, info, warning, error
+# Default: info
 log-level info
-# Log format (either text or json)
+# Log format
+# Options: text, json
+# Default: text
 log-format text
 # When multiple alerts are grouped together by Alertmanager, they can either be sent
-# each on their own (single mode) or be kept together (multi mode) (either single or multi; default is multi)
+# each on their own (single mode) or be kept together (multi mode)
+# Options: single, multi
+# Default: multi
 alert-mode single
 # Optionally protect with HTTP basic authentication
+# Default: ""
 user webhookUser
+# Default: ""
 password webhookPass
 
 labels {
@@ -49,23 +60,31 @@ resolved {
 }
 
 ntfy {
-    # URL of the ntfy topic - required
+    # URL of the ntfy topic.
+    # This setting is required.
+    # Default: ""
     topic https://ntfy.sh/alertmanager-alerts
     # ntfy authentication via Basic Auth (https://docs.ntfy.sh/publish/#username-password)
+    # Default: ""
     user user
+    # Default: ""
     password pass
     # ntfy authentication via access tokens (https://docs.ntfy.sh/publish/#access-tokens)
     # Either access-token or a user/password combination can be used - not both.
+    # Default: ""
     access-token foobar
     # When using (self signed) certificates that cannot be verified, you can instead specify
     # the SHA512 fingerprint.
     # openssl can be used to obtain it:
     # openssl s_client -connect HOST:PORT | openssl x509 -fingerprint -sha512 -noout
     # For convenience ntfy-alertmanager will convert the certificate to lower case and remove all colons.
+    # Default: ""
     certificate-fingerprint 13:6D:2B:88:9C:57:36:D0:81:B4:B2:9C:79:09:27:62:92:CF:B8:6A:6B:D3:AD:46:35:CB:70:17:EB:99:6E:28:08:2A:B8:C6:79:4B:F6:2E:81:79:41:98:1D:53:C8:07:B3:5C:24:5F:B1:8E:B6:FB:66:B5:DD:B4:D0:5C:29:91
     # Forward all messages to the specified email address.
+    # Default: ""
     email-address foo@example.com
     # Call the specified number for all alerts. Use `yes` to pick the first of your verified numbers.
+    Default: ""
     call +123456789
 }
 
@@ -78,9 +97,12 @@ alertmanager {
     # When alert-mode is set to "single" all alert labels will be used to create the silence.
     # When it is "multi" common labels between all the alerts will be used. WARNING: This
     # could silence unwanted alerts.
+    # Default: ""
     silence-duration 24h
     # Basic authentication (https://prometheus.io/docs/alerting/latest/https/)
+    # Default: ""
     user user
+    # Default: ""
     password pass
     # By default the Alertmanager URL gets parsed from the webhook. In case that
     # Alertmanger is not reachable under that URL, it can be overwritten here.
@@ -90,16 +112,21 @@ alertmanager {
 # When the alert-mode is set to single, ntfy-alertmanager will cache each single alert
 # to avoid sending recurrences.
 cache {
-    # The type of cache that will be used (either disabled, memory or redis; default is disabled).
+    # The type of cache that will be used
+    # Options: disabled, memory, redis
+    # Default: disabled
     type memory
     # How long messages stay in the cache for
+    # Default: 24h
     duration 24h
 
     # Memory cache settings
     # Interval in which the cache is cleaned up
+    # Default: 1h
     cleanup-interval 1h
 
     # Redis cache settings
     # URL to connect to redis (default: redis://localhost:6379)
+    # Default: redis://localhost:6379
     redis-url redis://user:password@localhost:6789/3
 }