embed well-known files in nginx command

docker-compose.yml

@@ -30,8 +30,27 @@ services:
     restart: unless-stopped
     expose:
       - "80"
-    volumes:
-      - ./well-known:/usr/share/nginx/html/.well-known:ro
+    command:
+      - sh
+      - -c
+      - |
+        mkdir -p /usr/share/nginx/html/.well-known/matrix
+        cat > /usr/share/nginx/html/.well-known/matrix/server <<'EOF'
+        {
+          "m.server": "mmdv-chats.dynv6.net"
+        }
+        EOF
+        cat > /usr/share/nginx/html/.well-known/matrix/client <<'EOF'
+        {
+          "m.homeserver": {
+            "base_url": "https://mmdv-chats.dynv6.net"
+          },
+          "m.identity_server": {
+            "base_url": "https://mmdv-chats.dynv6.net"
+          }
+        }
+        EOF
+        nginx -g 'daemon off;'
     labels:
       traefik.enable: "true"
       traefik.http.routers.tuwunel-wk.entrypoints: "https"