refactor: abstract logging + proxy directives in caddyfile

Caddyfile

@@ -1,3 +1,27 @@
+# Components
+
+(application_logging) {
+    log {
+        level INFO
+        output stdout
+        output file /var/log/caddy/caddy_{args[0]}.log {
+            roll_size 100MiB
+            roll_keep 5
+            roll_keep_for 100d
+        }
+        format json
+    }
+}
+
+(reverse_proxy_host) {
+    reverse_proxy host.containers.internal:{args[0]}
+}
+
+(application_base) {
+    import application_logging {args[0]}
+    import reverse_proxy_host {args[1]}
+}
+
 {
     log default {
         output stdout
@@ -16,70 +40,20 @@
     admin :2019
 }
 
-# Grafana
+# Routes
 
 :53100 {
-    log {
+    import application_base "grafana" 3100
-        level INFO
-        output stdout
-        output file /var/log/caddy/caddy_grafana.log {
-            roll_size 100MiB
-            roll_keep 5
-            roll_keep_for 100d
 }
-        format json
-    }
-
-    reverse_proxy host.containers.internal:3100
-}
-
-# Forgejo (web)
 
 :53000 {
-    log {
+    import application_base "forgejo" 3000
-        level INFO
-        output stdout
-        output file /var/log/caddy/caddy_forgejo.log {
-            roll_size 100MiB
-            roll_keep 5
-            roll_keep_for 100d
 }
-        format json
-    }
-
-    reverse_proxy host.containers.internal:3000
-}
-
-# Forgejo (ssh)
 
 :52052 {
-    log {
+    import application_base "forgejo-ssh" 2052
-        level INFO
-        output stdout
-        output file /var/log/caddy/caddy_forgejo-ssh.log {
-            roll_size 100MiB
-            roll_keep 5
-            roll_keep_for 100d
 }
-        format json
-    }
-
-    reverse_proxy host.containers.internal:2052
-}
-
-# Forgejo (postgres exporter / Prometheus)
 
 :53001 {
-    log {
+    import application_base "forgejo-pg-exporter" 3001
-        level INFO
-        output stdout
-        output file /var/log/caddy/caddy_forgejo-pg-exporter.log {
-            roll_size 10MiB
-            roll_keep 5
-            roll_keep_for 10d
-        }
-        format json
-    }
-
-    reverse_proxy host.containers.internal:3001
 }