Add network (#6)

Add network

Reviewed-on: #6
Co-authored-by: ryuupendragon <ryuu@ryuu.in>
Co-committed-by: ryuupendragon <ryuu@ryuu.in>

radicale/docker-compose.yml

@@ -23,8 +23,14 @@ services:
       - ${APPDATA_PATH}/radicale/config:/config:ro
     ports:
       - ${PORT}:5232
+    networks:
+      - frontend
     restart: unless-stopped
     healthcheck:
       test: curl -f http://127.0.0.1:5232 || exit 1
       interval: 30s
       retries: 3
+
+networks:
+  frontend:
+    external: true