补齐后端最小功能和前端

.env.example

@@ -1,5 +1,6 @@
 PUBLIC_ORIGIN=https://blog.example.com
 SITE_ADDRESS=blog.example.com
+SITE_TITLE=ChuBlog
 ADMIN_USERNAME=admin
 # Generate with chublog-api hash-password; keep single quotes around the hash.
 ADMIN_PASSWORD_HASH='$argon2id$REPLACE_WITH_GENERATED_HASH'
@@ -9,3 +10,6 @@ CHUSQL_PASSWORD=replace-with-different-random-index-password-at-least-16-charact
 SSH_PORT=2222
 HTTP_PORT=80
 HTTPS_PORT=443
+
+# Tencent Cloud VPC image mirror. Outside Tencent Cloud, clear this value.
+REGISTRY_PREFIX=mirror.ccs.tencentyun.com/library/