Useful Docker Commands In daily use

Docker Basics

docker version
- Shows the Docker version installed on your system.
- ```
  docker version
```
docker info
- Displays system-wide information about Docker, including number of containers, images, and other details.
```
  docker info
```
docker help
- Provides help on using Docker commands.
```
  docker help
```

Working with Images

docker pull
- Downloads an image from a Docker registry (e.g., Docker Hub).
```
  docker pull <image_name>
```
docker images
- Lists all the images on your local machine.
```
  docker images
```
docker rmi
- Removes one or more images from your local machine.
- ```
  docker rmi <image_id>
```

docker tag

Tags an image with a new name.

  docker tag <existing_image> <new_image:tag>

docker build

Builds an image from a Dockerfile.

  docker build -t <image_name:tag> <path_to_dockerfile>

docker push
- Uploads an image to a Docker registry.
```
  docker push <image_name:tag>
```

Working with Containers

docker run

Runs a container from an image.

  docker run -d --name <container_name> <image_name>

docker ps
- Lists all running containers.
```
  docker ps
```
docker ps -a
- Lists all containers, including stopped ones.
```
  docker ps -a
```
docker stop
- Stops a running container.
```
  docker stop <container_id>
```
docker start
- Starts a stopped container.
```
  docker start <container_id>
```
docker restart
- Restarts a container.
```
  docker restart <container_id>
```
docker rm
- Removes a container.
```
  docker rm <container_id>
```
docker logs
- Displays the logs of a container.
```
  docker logs <container_id>
```
docker exec
- Runs a command in a running container.
```
  docker exec -it <container_id> <command>
```
docker attach
- Attaches your terminal to a running container.
```
  docker attach <container_id>
```

Container Networking

docker network ls
- Lists all Docker networks.
```
  docker network ls
```
docker network create
- Creates a new Docker network.
```
  docker network create <network_name>
```
docker network inspect
- Displays detailed information about a network.
```
  docker network inspect <network_name>
```

docker network connect

Connects a container to a network.

  docker network connect <network_name> <container_id>

docker network disconnect
- Disconnects a container from a network.
```
  docker network disconnect <network_name> <container_id>
```

Docker Volumes

docker volume ls
- Lists all Docker volumes.
```
  docker volume ls
```
docker volume create
- Creates a new Docker volume.
```
  docker volume create <volume_name>
```
docker volume inspect
- Displays detailed information about a volume.
```
  docker volume inspect <volume_name>
```
docker volume rm
- Removes a Docker volume.
```
  docker volume rm <volume_name>
```

Docker Compose

docker-compose up
- Builds, (re)creates, starts, and attaches to containers for a service defined in a docker-compose.yml file.
```
  docker-compose up
```
docker-compose down
- Stops and removes containers, networks, volumes, and images created by docker-compose up.
```
  docker-compose down
```
docker-compose ps
- Lists containers started by Docker Compose.
```
  docker-compose ps
```
docker-compose logs
- Displays log output from services managed by Docker Compose.
```
  docker-compose logs
```
docker-compose exec
- Executes a command in a running service container.
```
  docker-compose exec <service_name> <command>
```

Cleanup Commands

docker system prune
- Removes all unused containers, networks, images (both dangling and unreferenced), and optionally, volumes.
```
  docker system prune
```
docker container prune
- Removes all stopped containers.
```
  docker container prune
```
docker image prune
- Removes unused images.
```
  docker image prune
```
docker volume prune
- Removes all unused volumes.
```
  docker volume prune
```

Inspecting and Debugging

docker inspect
- Returns low-level information about Docker objects.
```
  docker inspect <container_id or image_id>
```
docker diff
- Inspects changes to files or directories on a container’s filesystem.
```
  docker diff <container_id>
```

Security

docker scan
- Scans your Docker images for vulnerabilities.
```
  docker scan <image_name>
```

By mastering these commands, you can effectively manage Docker images, containers, networks, volumes, and more, enhancing your ability to deploy and maintain containerized applications.

Useful Docker Commands In daily use

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More from this blog

Docker Basics

Working with Images

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Inspecting and Debugging

Security