If the automated feature continues to fail, you can manually install Java via the Dockerfile instead of using the devcontainer.json features. dockerfile RUN apt-get update && apt-get install -y openjdk-17-jdk Use code with caution. 💡 Troubleshooting Checklist Why it helps Check ghcr.io Status Ensures GitHub services are actually online. Restart Docker Desktop Clears temporary daemon hang-ups. Switch Networks Rules out local Wi-Fi or Firewall blocks. Update VS Code Ensures the Dev Container extension is compatible.

"features": { "ghcr.io/devcontainers/features/java:1": { "version": "latest", "installJdkForMaven": true } } Use code with caution. 4. Verify Network and Proxy Settings

If Docker runs out of "Image Mirror" space, downloads will fail midway. Go to . Check the Disk Image Location usage.

Referencing a version of the Java feature that no longer exists or has moved. 🚀 Step-by-Step Solutions 1. Clear the Dev Container Cache

Ensure your devcontainer.json is using the correct and most recent syntax for the Java feature.

Ensure is toggled on if your network requires it. 5. Increase Docker Disk Space