Docker 🛳

Installation :

https://docs.docker.com/engine/install/ubuntu/

# 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

1. Running a Container

Basic Run Command:
```
docker run <options> <image>
```
Example: Run a container in detached mode with port mapping:
```
docker run -d -p 443:443 --name <name> <docker_image_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:
```
docker ps
```
- Lists all running containers.

3. List All Containers (Including Stopped)

Command:
```
docker ps -a
```

4. Stopping a Container

Command:
```
docker stop <container_name_or_id>
```
- Stops a running container.
Example:
```
docker stop python
```

5. Starting a Container

Command:
```
docker start <container_name_or_id>
```

6. Remove a Container

Command:
```
docker rm <container_name_or_id>
```

7. Remove a Running Container (Force)

Command:
```
docker rm -f <container_name_or_id>
```

8. Viewing Container Logs

Command:
```
docker logs <container_name_or_id>
```

9. Run a Container with a Specific Command

Example: Running a container with a custom command:
```
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:

docker build -t <image_name> <path_to_dockerfile>

Example:
```
docker build -t my_image .
```

11. List All Docker Images

Command:
```
docker images
```

12. Remove a Docker Image

Command:
```
docker rmi <image_name_or_id>
```

13. Viewing Docker Info

Command:
```
docker info
```
- Displays information about your Docker installation and environment.

14. Accessing a Running Container (Interactive Mode)

Command:
```
docker exec -it <container_name_or_id> /bin/bash
```
- Starts an interactive bash session inside the container.

15. Viewing Docker Version

Command:
```
docker --version
```

16. Remove Unused Docker Resources (Images, Containers, Volumes)

Command:
```
docker system prune
```

17. Building and Running a Docker Compose Application

Command:
```
docker-compose up
```
- Starts the services defined in docker-compose.yml.

18. Stopping All Containers

Command:
```
docker stop $(docker ps -q)
```

19. Accessing a Container's File System

Command:

docker cp <container_name_or_id>:<container_path> <host_path>

20. Viewing Docker Container Statistics

Command:
```
docker stats
```
- Displays real-time statistics about containers' CPU and memory usage.

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Last updated 3 months ago