# Docker Factory Reset Script for Ubuntu

A comprehensive Python script that completely resets Docker to a fresh installation state on Ubuntu systems. This script removes all containers, images, volumes, networks, build cache, and even wipes the Docker data directories to give you a clean slate.

## 🚨 Warning

**This script is EXTREMELY DESTRUCTIVE!**

It will permanently delete:
- ✗ All Docker containers (running and stopped)
- ✗ All Docker images
- ✗ All Docker volumes (including all data stored in them)
- ✗ All custom Docker networks
- ✗ All build cache
- ✗ All Docker system data (`/var/lib/docker` and `/var/lib/containerd`)

**There is NO undo. All data will be permanently lost.**

Only use this script if you:
- Want to completely reset Docker to a fresh state
- Are experiencing issues that require a clean Docker installation
- Are decommissioning a system and want to clean up Docker
- Understand that ALL Docker data will be lost

## 📋 Features

- ✅ **Real-time output**: See exactly what's happening as commands execute
- ✅ **Progress indicators**: Visual progress bars for batch operations
- ✅ **Step-by-step execution**: Clear indication of each phase
- ✅ **Safety confirmation**: Requires explicit confirmation before proceeding
- ✅ **Comprehensive cleanup**: Removes everything Docker-related
- ✅ **Service management**: Properly stops and restarts Docker daemon
- ✅ **Final state report**: Shows the clean state after reset
- ✅ **Execution time tracking**: Reports how long the reset took

## 🔧 Requirements

### System Requirements
- **Operating System**: Ubuntu (18.04, 20.04, 22.04, 24.04 or later)
- **Docker**: Must be installed (any version)
- **Python**: Python 3.6 or later (usually pre-installed on Ubuntu)
- **Privileges**: Must be run as root (using `sudo`)

### Dependencies
All dependencies are part of Python's standard library:
- `subprocess` - For running system commands
- `sys` - For system operations
- `os` - For file system operations
- `time` - For timing and delays

No additional packages need to be installed.

## 🚀 Usage

Run the script with sudo:

```bash
sudo python3 docker_full_factory_reset.py
```

The script will ask you to type `RESET_DOCKER_UBUNTU` to confirm.

## 📖 What Each Step Does

1. **Containers**: Stops and removes all containers
2. **Images**: Removes all images
3. **Networks**: Removes custom networks (keeps default ones)
4. **Volumes**: Removes all volumes
5. **Prune**: Clears build cache and system artifacts
6. **Stop services**: Stops `docker` and `containerd`
7. **Delete directories**: Removes `/var/lib/docker` and `/var/lib/containerd`
8. **Start services**: Restarts Docker and verifies with `docker info`

## 🔍 Verify After Reset

```bash
docker run hello-world
```

## ⚠ Final Warning

This script deletes **ALL** Docker data. Back up anything important first.