Bits of .NET

🗑️ Docker Eats Disk Space

Unused images, containers, volumes fill disk. docker system prune cleans everything. Reclaim disk space.

📝 Prune Commands

# Clean everything
docker system prune -a --volumes

# Clean containers
docker container prune

# Clean images
docker image prune -a

# Clean volumes
docker volume prune

# Clean networks
docker network prune

# Clean build cache
docker builder prune

# See disk usage
docker system df

# Auto-prune in Docker Desktop
Settings → Docker Engine → add:
"builder": { "gc": { "enabled": true } }

🎯 Scheduled Cleanup

#!/bin/bash
# /usr/local/bin/docker-cleanup.sh

echo "Starting Docker cleanup at $(date)"
docker system prune -af --volumes
echo "Cleanup complete"

# Add to crontab (runs every Sunday at 2 AM)
0 2 * * 0 /usr/local/bin/docker-cleanup.sh >> /var/log/docker-cleanup.log 2>&1

💡 Tips

• Use –filter to prune only old items (until=24h)
• Use –force to skip confirmation
• Use –all to remove all unused images
• Use –volumes to include volumes (be careful!)