When Docker fails to start because its default bridge networks clash with existing subnets, you can diagnose the issue by checking logs and routing tables, then resolve it by adjusting the daemon.json subnet settings, recreating the conflicting networks, and optionally rebuilding the ingress network.
The article explains why Docker image pulls often time out in China due to outdated or unreachable registry mirrors, lists common invalid mirror configurations, and provides three verified mirror URLs for 2025 together with step‑by‑step setup instructions and practical troubleshooting tips.
This guide lists several free Docker registry mirror URLs, shows how to add them to the daemon.json file, and explains the steps to restart Docker so that image pulls are faster and more reliable.
This article explains how to resolve Docker image pull failures in China by editing the daemon.json file to add accessible domestic registry mirrors, providing step‑by‑step instructions and a ready‑to‑use mirror list for developers and operators.
