Day 20: Docker Cheatsheet

We have completed✅ the Docker hands-on and I hope you have learned something interesting from it.🙌

Now it's time to take your Docker skills to the next level by creating a comprehensive cheat-sheet of all the commands you've learned so far. This cheat-sheet should include commands for both Docker and Docker-Compose, as well as brief explanations of their usage. This cheat-sheet will not only help you in the future but also contribute to the DevOps community by providing a useful resource for others.

Here's a comprehensive Docker cheat sheet that covers various Docker commands and concepts

Docker Basics:

Images: Templates that contain the filesystem and configuration needed to run a container.

docker images: List all available images.
docker pull <image_name>:<tag>: Download an image from a repository.
docker rmi <image_name>:<tag>: Remove an image.

Containers: Instances of Docker images running as isolated processes.

docker ps: List running containers.
docker ps -a: List all containers (including stopped ones).
docker run <image_name>:<tag>: Create and start a new container.
docker start <container_id>: Start a stopped container.
docker stop <container_id>: Stop a running container.
docker rm <container_id>: Remove a container.

Dockerfile: Text file with instructions to build a Docker image.

FROM <base_image>
RUN <command>
COPY <src> <dest>
WORKDIR <directory>
EXPOSE <port>
CMD <command>

Docker Compose: Tool for defining and running multi-container applications.

docker-compose up: Start containers defined in docker-compose.yml.
docker-compose down: Stop and remove containers.
docker-compose up -d : Start the container in detach mode
docker-compose stop: Stop container started by docker-compose up
docker-compose ps: List container defined in a docker-compose.yml
docker-compose logs: View all logs defined in a docker-compose.yml

Docker Networking:

docker network ls: List all networks.
docker network create <network_name>: Create a new network.
docker network connect <network_name> <container_name>: Connect a container to a network.
docker network disconnect <network_name> <container_name>: Disconnect a container from a network.

Docker Volumes:

Volumes: Persistent data storage that can be shared between containers and the host.
- docker volume ls: List all volumes.
- docker volume create <volume_name>: Create a new volume.
- docker run -v <volume_name>:<container_path>: Mount a volume into a container.

Docker Registry:

Docker Hub: A public registry for Docker images.
docker login: Log in to a Docker registry.
docker push <image_name>:<tag>: Upload an image to a registry.

Docker Management:

docker logs <container_id>: View logs of a container.
docker exec -it <container_id> <command>: Execute a command inside a running container.
docker inspect <container_id>: View detailed information about a container.
docker stats: Display live performance data for all containers.

Docker Cleanup:

docker system prune: Remove all unused images, containers, networks, and volumes.
docker system prune -a: Remove all images, containers, networks, and volumes.

Remember that this cheat sheet provides only a quick overview of Docker commands and concepts. For more in-depth information and usage details, refer to the official Docker documentation.

Happy Learning!