Day20 of #90DaysOfDevOpsChallenge: The Docker Cheat-sheet🔥

Hello everyone, today I completed Day 20 of my journey.

We learned about Docker, and here is a short list of Docker commands.

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Installation and Setup

• sudo apt-get update: Updates the package lists for upgrades and new package installations.

• sudo apt install docker.io: Install Docker.

Container Management

• docker ps: Lists running containers.

• docker ps -a: Lists all containers, including stopped ones.

• docker run [IMAGE_NAME]: Runs a container using a Docker image (e.g., docker run mysql:latest).

  • --name [CONTAINER_NAME]: Assigns a custom name to the container.

  • -v [HOST_VOLUME]:[CONTAINER_VOLUME]: Mounts a volume to the container (e.g., -v mysql-data:/var/lib/mysql).

  • -e: Assigns environment variables to the container.

• docker stop [CONTAINER_ID]: Stops a running container.

• docker start [CONTAINER_ID]: Starts a stopped container.

• docker restart [CONTAINER_ID]: Restarts a container.

• docker pause [CONTAINER_ID]: Pauses the container's processes.

• docker rm [CONTAINER_ID]: Removes a stopped container.

• docker kill [CONTAINER_ID]: Forcefully stops a container.

Image Management

• docker pull [IMAGE_NAME]: Pulls an image from Docker Hub (e.g., docker pull nginx).

• docker push [IMAGE_NAME]: Pushes an image to a Docker registry.

• docker images: Lists all downloaded images.

• docker rmi [IMAGE_ID]: Removes an image.

• docker tag [SOURCE_IMAGE] [NEW_IMAGE]: Tags an image with a new name.

Volumes

• docker volume create [VOLUME_NAME]: Creates a new volume.

• docker volume ls: Lists all Docker volumes.

• docker volume inspect [VOLUME_NAME]: Shows detailed information about a specific volume.

• docker volume rm [VOLUME_NAME]: Removes a volume.

Networks

• docker network ls: Lists all networks.

  • Bridge: Default network.

  • Host: Connects containers directly to the host network.

  • None: Completely isolates the container.

  • User-defined bridge: Custom network created by the user.

• docker network create [NETWORK_NAME]: Creates a new network.

• docker network connect [NETWORK_NAME] [CONTAINER_NAME]: Connects a container to a network.

• docker network disconnect [NETWORK_NAME] [CONTAINER_NAME]: Disconnects a container from a network.

Docker Compose Commands

• docker-compose --version: Shows the Docker Compose version.

• docker-compose up: Starts services defined in the docker-compose.yml file.

• docker-compose down: Stops and removes containers, networks, volumes, and images created by docker-compose up.

• docker-compose ps: Lists containers created by Docker Compose.

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Hope you Enjoyed😊

Happy Learning : )