Cheat Sheet #day15 - Docker Commands

Docker Commands Cheat Sheet

Docker is a platform for developing, shipping, and running applications in containers. Here is a cheat sheet with the most commonly used Docker commands.

Basic Docker Commands

Check Docker Version:
```
  docker --version
```
Get System-wide Information:
```
  docker info
```

Working with Containers

List Running Containers:
```
  docker ps
```
List All Containers (including stopped):
```
  docker ps -a
```
Start a Container:
```
  docker start CONTAINER_ID
```
Stop a Container:
```
  docker stop CONTAINER_ID
```
Remove a Container:
```
  docker rm CONTAINER_ID
```
Remove All Stopped Containers:
```
  docker container prune
```

Working with Images

List Images:
```
  docker images
```
Pull an Image from Docker Hub:
```
  docker pull IMAGE_NAME
```
Remove an Image:
```
  docker rmi IMAGE_NAME
```

Build an Image from a Dockerfile:

  docker build -t IMAGE_NAME PATH_TO_DOCKERFILE

Tag an Image:

  docker tag SOURCE_IMAGE[:TAG] TARGET_IMAGE[:TAG]

Running Containers

Run a Container (from an image):
```
  docker run IMAGE_NAME
```
Run a Container in Detached Mode:
```
  docker run -d IMAGE_NAME
```

Run a Container with a Specific Name:

  docker run --name CONTAINER_NAME IMAGE_NAME

Run a Container and Map Ports:

  docker run -p HOST_PORT:CONTAINER_PORT IMAGE_NAME

Run a Container and Mount a Volume:

  docker run -v /host/path:/container/path IMAGE_NAME

Inspecting Containers and Images

Inspect a Container:
```
  docker inspect CONTAINER_ID
```
Inspect an Image:
```
  docker inspect IMAGE_NAME
```

Managing Docker Networks

List Docker Networks:
```
  docker network ls
```
Create a Network:
```
  docker network create NETWORK_NAME
```
Remove a Network:
```
  docker network rm NETWORK_NAME
```

Connect a Container to a Network:

  docker network connect NETWORK_NAME CONTAINER_NAME

Disconnect a Container from a Network:

  docker network disconnect NETWORK_NAME CONTAINER_NAME

Docker Compose Commands

Start Services Defined in docker-compose.yml:
```
  docker-compose up
```
Start Services in the Background:
```
  docker-compose up -d
```
Stop Services:
```
  docker-compose down
```
Build or Rebuild Services:
```
  docker-compose build
```
View Compose Logs:
```
  docker-compose logs
```
Scale Services:
```
  docker-compose scale SERVICE=NUM
```

Miscellaneous Commands

View Container Logs:
```
  docker logs CONTAINER_ID
```
Execute a Command in a Running Container:
```
  docker exec -it CONTAINER_ID COMMAND
```
Follow Log Output:
```
  docker logs -f CONTAINER_ID
```
Restart a Container:
```
  docker restart CONTAINER_ID
```

Cleaning Up

Remove All Unused Images:
```
  docker image prune -a
```
Remove All Unused Volumes:
```
  docker volume prune
```
Remove All Unused Networks:
```
  docker network prune
```

Conclusion

This cheat sheet provides a quick reference to the most commonly used Docker commands, helping you manage containers, images, networks, and more efficiently. For more detailed information, refer to the official Docker documentation.