fix: add DNS and mirror hosts configuration for Unraid support

templates/docker-compose-gitea.yml.tpl

@@ -3,6 +3,8 @@
 # DATA_PATH is host-specific (UNRAID_GITEA_DATA_PATH or FEDORA_GITEA_DATA_PATH)
 # DB_SERVICE block is stripped for sqlite3, kept for mysql/postgres/mssql.
 # INTERNAL_NET blocks are also stripped for sqlite3 (no DB = no internal network).
+# DNS_OVERRIDE block is stripped for Unraid (br0 inherits host DNS).
+# MIRROR_HOSTS block is stripped for Unraid (primary doesn't mirror from anywhere).
 
 version: "3"
 
@@ -48,6 +50,14 @@ ${DB_ENV_VARS}
 # INTERNAL_NET_REF_START
       gitea-internal:
 # INTERNAL_NET_REF_END
+# DNS_OVERRIDE_START
+    dns:
+      - ${GITEA_DNS_SERVER}
+# DNS_OVERRIDE_END
+# MIRROR_HOSTS_START
+    extra_hosts:
+      - "${GITEA_MIRROR_SOURCE_HOST}:${GITEA_MIRROR_SOURCE_IP}"
+# MIRROR_HOSTS_END
     healthcheck:
       test: ["CMD", "curl", "-sf", "http://localhost:3000/api/v1/version"]
       interval: 30s