Here I have provided the cheat sheet for Docker.
Installation
- Docker Desktop is available for Mac, Linux, and Windows https://docs.docker.com/desktop
General Commands :
Start the docker daemon
docker -dGet help with Docker. Can also use –help on all subcommands
docker --helpDisplay system-wide information
docker info
Image :
- Docker images are a lightweight, standalone, executable package of software that includes everything needed to run an application:
code,runtime,system tools,system librariesandsettings.
COMMANDS:
Build an Image from a Dockerfile:
docker build -t <image_name>Build an Image from a Dockerfile without the cache:
docker build -t <image_name> . –no-cache`List local images:
docker imagesDelete an Image:
docker rmi <image_name>Remove all unused images:
docker image prune
Containers :
A container is a runtime instance of a docker image. A container will always run the same, regardless of the infrastructure.
Containers isolate software from its environment and ensure that it works uniformly despite differences for instance between development and staging.
COMMANDS:
Create and run a container from an image, with a custom name:
docker run --name <container_name> <image_name>Run a container with and publish a container’s port(s) to the host:
docker run -p <host_port>:<container_port> <image_name>Run a container in the background:
docker run -d <image_name>Start or stop an existing container:
docker start|stop <container_name> (or <container-id>)Remove a stopped container:
docker rm <container_name>Open a shell inside a running container:
docker exec -it <container_name> bash/shFetch and follow the logs of a container:
docker logs -f <container_name>To inspect a running container:
docker inspect <container_name> (or <container_id>)To list currently running containers:
docker psList all docker containers (running and stopped):
docker ps --allView resource usage stats:
docker container stats
Docker Hub:
- Docker Hub is a service provided by Docker for finding and sharing container images with your team.
COMMANDS:
Login into Docker:
docker login -u <username>Publish an image to Docker Hub:
docker push <username>/<image_name>Search Hub for an image:
docker search <image_name>Pull an image from a Docker Hub:
docker pull <image_name>