admin: Remove default Chinese welcome message

Empty conf/admin/hello.html so the admin dashboard no longer shows the
"你好 ... 欢迎使用 RustDesk API" welcome card by default.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

conf/admin/hello.html

@@ -1 +0,0 @@
-### 👏👏👏 你好 ***{{username}}***， 欢迎使用 [RustDesk API](https://github.com/lejianwen/rustdesk-api)

conf/config.yaml

@@ -1,4 +1,4 @@
-lang: "zh-CN"
+lang: "en"
 app:
   web-client: 1  # 1:enable 0:disable
   register: false #whether registration is enabled

docker-compose.yml.example

@@ -0,0 +1,64 @@
+# RustDesk full stack (server + relay + API/Web Admin) — self-contained example.
+#
+# Copy to docker-compose.yml and adjust the public IP / keys / secrets:
+#   cp docker-compose.yml.example docker-compose.yml
+#
+# Everything is inline (no .env). The Ed25519 key below is an EXAMPLE — generate
+# your own for production. The two keys belong together:
+#   - hbbs/hbbr get the SECRET key via -k
+#   - rustdesk-api gets the matching PUBLIC key via RUSTDESK_API_RUSTDESK_KEY
+# (the public key is also what clients see as their "Key").
+
+services:
+  hbbs:
+    container_name: hbbs
+    image: rustdesk/rustdesk-server:latest
+    command: hbbs -r 194.164.204.114:21117 -k 1jqLELJaIjaRtt1Tcj6BhqJ7DhT9WszBH/XUHrqJdhdg4K98HmANQFOpUx/vPZFRWnHPTYYHyIB8uH3Xxr8PTw==
+    environment:
+      - TZ=Europe/Berlin
+      - ENCRYPTED_ONLY=1
+      - MUST_LOGIN=Y
+    volumes:
+      - ./data/server:/root
+    ports:
+      - "21115:21115"
+      - "21116:21116"
+      - "21116:21116/udp"
+      - "21118:21118"
+    depends_on:
+      - hbbr
+    restart: unless-stopped
+
+  hbbr:
+    container_name: hbbr
+    image: rustdesk/rustdesk-server:latest
+    command: hbbr -k 1jqLELJaIjaRtt1Tcj6BhqJ7DhT9WszBH/XUHrqJdhdg4K98HmANQFOpUx/vPZFRWnHPTYYHyIB8uH3Xxr8PTw==
+    environment:
+      - TZ=Europe/Berlin
+    volumes:
+      - ./data/server:/root
+    ports:
+      - "21117:21117"
+      - "21119:21119"
+    restart: unless-stopped
+
+  rustdesk-api:
+    container_name: rustdesk-api
+    image: git.hackner.dev/thomas/rustdesk-api:latest
+    command: ["./apimain"]
+    environment:
+      - TZ=Europe/Berlin
+      - RUSTDESK_API_LANG=en
+      - RUSTDESK_API_RUSTDESK_ID_SERVER=194.164.204.114:21116
+      - RUSTDESK_API_RUSTDESK_RELAY_SERVER=194.164.204.114:21117
+      - RUSTDESK_API_RUSTDESK_API_SERVER=http://194.164.204.114:21114
+      - RUSTDESK_API_RUSTDESK_KEY=YOCvfB5gDUBTqVMf7z2RUVpxz02GB8iAfLh918a/D08=
+      - RUSTDESK_API_JWT_KEY=z5rt4z465rtzdh5sudtuzrutd66zz6
+    ports:
+      - "21114:21114"
+    volumes:
+      - ./api:/app/data
+    depends_on:
+      - hbbs
+      - hbbr
+    restart: unless-stopped