# Docker and Docker Compose Installation Guide

Guide to installing Docker and Docker Compose on Ubuntu 24.04.

## Install Docker

```bash
# Update packages
sudo apt update

# Install Docker
sudo apt install -y docker.io

# Start Docker
sudo systemctl start docker
sudo systemctl enable docker

# Add current user to docker group (log out/in after)
sudo usermod -aG docker $USER
```

## Install Docker Compose

```bash
sudo apt install -y docker-compose
```

## Verify Installation

```bash
docker --version
docker-compose --version
```

## Troubleshooting

### Docker won't start
```bash
sudo systemctl status docker
sudo systemctl restart docker
```

### Permission denied errors
Make sure you're in the docker group:
```bash
groups $USER
```

If not, run:
```bash
sudo usermod -aG docker $USER
# Then log out and back in
```

## Basic Docker Commands

```bash
# List running containers
docker ps

# List all containers
docker ps -a

# Stop a container
docker stop <container-name>

# Remove a container
docker rm <container-name>

# View logs
docker logs <container-name>

# Build and run with docker-compose
docker-compose up -d --build
```

## Useful Links

- [Docker Official Docs](https://docs.docker.com/)
- [Docker Compose Docs](https://docs.docker.com/compose/)