Change repos for ssh-chat and matterbridge

docker-compose.yml

@@ -1,7 +1,7 @@
 version: "2.1"
 services:
   ssh-chat:
-    build: https://gitea.demb.uk/a31/ssh-chat.git#v1.11-rc5
+    build: https://gitea.demb.uk/third-party-mirrors/ssh-chat.git#v1.11-rc5
     image: ssh-chat
     restart: unless-stopped
     ports:
@@ -13,7 +13,7 @@ services:
     command: "/usr/local/bin/ssh-chat --identity /run/secrets/chatkey --admin=/run/secrets/admins --log=/dev/stdout --motd=/run/secrets/motd"
 
   matterbridge:
-    build: https://gitea.demb.uk/a31/matterbridge.git#v1.26.0
+    build: https://gitea.demb.uk/third-party-mirrors/matterbridge.git#v1.26.0
     image: matterbridge
     restart: unless-stopped
     secrets: