# Docker 🛳
## Installation :
{% hint style="info" %}
{% endhint %}
{% code overflow="wrap" %}
```bash
# Add Docker's official GPG key:
sudo apt-get update
sudo apt-get install ca-certificates curl
sudo install -m 0755 -d /etc/apt/keyrings
sudo curl -fsSL https://download.docker.com/linux/ubuntu/gpg -o /etc/apt/keyrings/docker.asc
sudo chmod a+r /etc/apt/keyrings/docker.asc
# Add the repository to Apt sources:
echo \
"deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/docker.asc] https://download.docker.com/linux/ubuntu \
$(. /etc/os-release && echo "${UBUNTU_CODENAME:-$VERSION_CODENAME}") stable" | \
sudo tee /etc/apt/sources.list.d/docker.list > /dev/null
sudo apt-get update
```
{% endcode %}
***
#### 1. **Running a Container**
* **Basic Run Command**:
```bash
docker run
```
* **Example**: Run a container in detached mode with port mapping:
```bash
docker run -d -p 443:443 --name
```
* `-d`: Run container in detached mode.
* `-p 443:443`: Map port 443 on the host to port 443 on the container.
#### 2. **List Running Containers**
* **Command**:
```bash
docker ps
```
* Lists all running containers.
#### 3. **List All Containers (Including Stopped)**
* **Command**:
```bash
docker ps -a
```
#### 4. **Stopping a Container**
* **Command**:
```bash
docker stop
```
* Stops a running container.
* **Example**:
```bash
docker stop python
```
#### 5. **Starting a Container**
* **Command**:
```bash
docker start
```
#### 6. **Remove a Container**
* **Command**:
```bash
docker rm
```
#### 7. **Remove a Running Container (Force)**
* **Command**:
```bash
docker rm -f
```
#### 8. **Viewing Container Logs**
* **Command**:
```bash
docker logs
```
#### 9. **Run a Container with a Specific Command**
* **Example**: Running a container with a custom command:
```bash
docker run -d --name mycontainer ubuntu sleep 3600
```
* This runs the Ubuntu image and starts the container with the command `sleep 3600` (for 1 hour).
#### 10. **Building a Docker Image**
* **Command**:
```bash
docker build -t
```
* **Example**:
```bash
docker build -t my_image .
```
#### 11. **List All Docker Images**
* **Command**:
```bash
docker images
```
#### 12. **Remove a Docker Image**
* **Command**:
```bash
docker rmi
```
#### 13. **Viewing Docker Info**
* **Command**:
```bash
docker info
```
* Displays information about your Docker installation and environment.
#### 14. **Accessing a Running Container (Interactive Mode)**
* **Command**:
```bash
docker exec -it /bin/bash
```
* Starts an interactive bash session inside the container.
#### 15. **Viewing Docker Version**
* **Command**:
```bash
docker --version
```
#### 16. **Remove Unused Docker Resources (Images, Containers, Volumes)**
* **Command**:
```bash
docker system prune
```
#### 17. **Building and Running a Docker Compose Application**
* **Command**:
```bash
docker-compose up
```
* Starts the services defined in `docker-compose.yml`.
#### 18. **Stopping All Containers**
* **Command**:
```bash
docker stop $(docker ps -q)
```
#### 19. **Accessing a Container's File System**
* **Command**:
```bash
docker cp :
```
#### 20. **Viewing Docker Container Statistics**
* **Command**:
```bash
docker stats
```
* Displays real-time statistics about containers' CPU and memory usage.
