Docker

Docker Desktop on Windows uses WSL2 with dynamic VHDX files. They grow when adding images/containers but don’t shrink automatically when deleting them. Result: C: drive fills up, even though docker system df shows free space. 💡 Solution: manual VHDX optimization via PowerShell + Docker utility. 📦 Cleanup script Create file # File: $HOME\Scripts\docker-clear-wsl.ps1 $script = @' $LOCAL = "$env:LOCALAPPDATA\Docker\wsl" $VHD1 = Join-Path $LOCAL "disk\docker_data.vhdx" $VHD2 = Join-Path $LOCAL "main\ext4.vhdx" # 1. Docker cleanup docker system prune -f # 2. Reclaim space via official tool docker run --rm --privileged --pid=host docker/desktop-reclaim-space docker rmi docker/desktop-reclaim-space -f # 3. Stop Docker Desktop Get-Process -Name "Docker Desktop","com.docker.backend","com.docker.build" ` -ErrorAction SilentlyContinue | Stop-Process -Force -ErrorAction SilentlyContinue # 4. Shutdown WSL wsl --shutdown # 5. Optimize VHDX files (compact) if (Test-Path $VHD1) { Optimize-VHD -Path $VHD1 -Mode Full } if (Test-Path $VHD2) { Optimize-VHD -Path $VHD2 -Mode Full } # 6. Restart Docker Desktop Start-Sleep -Seconds 2 Start-Process -FilePath "$env:ProgramFiles\Docker\Docker\Docker Desktop.exe" ` -ErrorAction SilentlyContinue '@ $script | Out-File -FilePath "$HOME\Scripts\docker-clear-wsl.ps1" -Encoding UTF8 Run # As Administrator (required for Optimize-VHD) powershell.exe -ExecutionPolicy Bypass -File "$HOME\Scripts\docker-clear-wsl.ps1" 🔍 How it works Step Command What it does 1 docker system prune -f Removes stopped containers, unused images, build cache 2 docker/desktop-reclaim-space Official Docker tool to reclaim space in WSL2 3 Stop-Process Gracefully stops Docker Desktop (otherwise VHDX is locked) 4 wsl --shutdown Fully shuts down WSL, freeing files for optimization 5 Optimize-VHD -Mode Full Compacts VHDX files, returning space to host 6 Start-Process Restarts Docker Desktop Why this way: ...

For home servers and test environments, resource saving is important: containers can be stopped and system powered off during nights or off-hours. This guide describes a safe method with state preservation and automatic recovery. 💡 Method suits OrangePI, Raspberry Pi, old PCs, and any systems where power efficiency matters. 📦 Container shutdown script Create script # File: /usr/local/bin/stop_containers_and_shutdown.sh cat > /usr/local/bin/stop_containers_and_shutdown.sh << 'EOF' #!/bin/bash # # Script saves running container IDs, # stops them, and initiates system shutdown. # CONTAINERS_FILE="/etc/active_containers.txt" echo "=== $(date '+%Y-%m-%d %H:%M:%S') ===" echo "Starting container shutdown and system power-off script" # Get list of running containers (by ID) RUNNING_CONTAINERS=$(docker ps -q) if [ -n "${RUNNING_CONTAINERS}" ]; then echo "Saving running containers to ${CONTAINERS_FILE}" echo "${RUNNING_CONTAINERS}" > "${CONTAINERS_FILE}" docker stop ${RUNNING_CONTAINERS} echo "Containers stopped." else echo "No running containers." [ -f "${CONTAINERS_FILE}" ] && rm -f "${CONTAINERS_FILE}" fi sleep 10 echo "Shutting down system." /sbin/shutdown -h now EOF Make executable chmod +x /usr/local/bin/stop_containers_and_shutdown.sh How it works Step Description docker ps -q Gets IDs of all running containers > /etc/active_containers.txt Saves list for recovery docker stop Gracefully stops containers (SIGTERM) sleep 10 Allows time for operations to complete shutdown -h now Powers off the system Why this way: ...

Docker Volumes store data independently from containers but require separate approach for backup. This guide describes universal methods for working with volumes using popular services as examples. 💡 Replace volume names with your own. Methods work with any containers. 📦 Backup volumes Via docker-volume-backup (recommended) docker run --rm \ -v portainer_data:/backup/portainer_data \ -v postgres_data:/backup/postgres_data \ -v redis_data:/backup/redis_data \ -v /opt/docker/backup:/archive \ --entrypoint backup \ offen/docker-volume-backup:v2 Parameters: Parameter Description -v <volume>:/backup/<name> Map volume to backup directory -v /opt/docker/backup:/archive Where to save archive on host --entrypoint backup Run backup mode --rm Remove container after completion Why this method: ...

GPT4Free (g4f) is a free tool that gives you access to powerful AI models: GPT-4/5, Claude, Gemini, DeepSeek. It works by reverse-engineering public APIs. ⚠️ Note: For educational and testing purposes only. May violate some services’ ToS. Install in 2 minutes Requirements Any computer with internet Python 3.10+ (check “Add to PATH” during install) One command pip install -U g4f[all] Done. Library is ready. Run it Option 1: Web UI (chat in your browser) python -m g4f.cli gui --port 8080 Open in browser: http://localhost:8080/chat/ ...

WSL (Windows Subsystem for Linux) lets you run native Linux command-line tools directly on Windows - no VM, no dual boot. WSL1 - syscall translation layer (fast, but not 100% compatible) WSL2 - real Linux kernel in lightweight virtualization (full compatibility, slightly more resources) 💡 Use WSL2. Near-native performance with full Docker, systemd, and Linux feature support. Requirements OS: Windows 10 (2004+, build 19041+) or Windows 11 Architecture: x64 or ARM64 Privileges: Administrator (for install) Virtualization: Enabled in BIOS/UEFI (Hyper-V Platform) Check virtualization: ...