docker login
docker push
Container Commands -
docker run nginx - Runs a container in an attached mode
docker run ubuntu - Runs and exits the container
docker run ubuntu sleep 5 - Runs and sleep for 5s. After 5s container stops
docker run -d nginx - Runs the container in detached mode in the background
docker attach <container_id> - Attach to an already running container
docker ps - List all running containers. Basic info about container
docker ps -a - Lists all running, stopped and exited containers
docker stop <container name/id> - Stops a running container
docker rm <container name/id> - Removes a stopped/exited container permanently
docker exec cat etc/hosts - List content of host file inside a container
Image Commands -
docker images - Lists available images and their sizes
docker rmi nginx - Removed the image
docker pull nginx - Pulls only image. Doesn’t execute a container
Docker run -
docker run -it nginx - interactive and terminal option
Run -Port mapping - Port Mapping/Publishing on containers -
docker run -p 80:5000 nginx
docker run -p 8080:8080 jenkins/jenkins - runs a new container every time
Run -Volume mapping -
For persisting data map a directory outside container in docker host
docker run -p 8080:8080 jenkins/jenkins - runs a new container every time
Inspect Container -
docker inspect <container_name> - Detailed info about container
Container Logs -
docker logs <container id/name>
Advanced Docker commands -
Tags for image versioning
Attached/Detached mode -
docker run -d ubuntu sleep 1500 - Runs container in background
docker attach <container_id> - run container in foreground
Create own image and run -
docker build <dockerfile_name>
docker build . -t <image_name> - Builds an image using a docker file and gives it the tag <image_name>
Environment Variables -
docker inspect <container_name> - List env variables configured for the container
docker run -e <env_var>= <image_name>
Command vs Entrypoint - Explore
CMD nginx
docker run --entrypoint - explore more
Docker Compose -
docker-compose.yaml
docker-compose up - Brings up entire application stack
docker run --name=name <image_name> - Gives a name to the container to be linked
docker run --link - links more than one running containers by name
docker compose - build
docker compose - versions