{{tag>docker cli}}

====== Docker commands ======
===== Run bash inside container =====

  docker exec -it <container> /bin/bash
===== Copy file from host to container =====


  docker cp <localfile> <container>:<container_path>

e.g. //docker cp LocalSettings.php my-mediawiki:/var/www/html/ 
//

===== Get container IP =====

  docker inspect -f '{{range.NetworkSettings.Networks}}{{.IPAddress}}{{end}}' <container-name>

===== Run kibana =====
Run kibana on http://localhost:5601 and connect to an elastic search instance running locally on port 9200, or tunneled from remote server:

  docker run --name kib-01 -e ELASTICSEARCH_HOSTS=http://localhost:9200 --rm --network host docker.elastic.co/kibana/kibana:7.10.0

Run another instance simultaneously on 5602 port
  docker run --name kib-02 -e ELASTICSEARCH_HOSTS=http://localhost:9201 -e SERVER_PORT=5602 --rm --network host docker.elastic.co/kibana/kibana:7.10.0

===== Remove only dangling volumes =====

Use this because of [[https://github.com/docker/cli/issues/4028|this bug]]
  docker volume rm $(docker volume ls -q -f dangling=true)

===== Connect to different docker daemon running on different port =====
Example connecting to [[wiki:dockerized_jenkins_install_docker_via_ansible_dind|Dockerized jenkins install with docker in docker via ansible (dind)]] listening on 2376 port on host
  docker -H tcp://localhost:2376 version

You will get error //Error response from daemon: Client sent an HTTP request to an HTTPS server//. You have to point the docker client to use the certificates e.g.

  docker --tlsverify --tlscacert=/var/lib/docker/volumes/build-server_jenkins-docker-certs/_data/ca.pem --tlscert=/var/lib/docker/volumes/build-server_jenkins-docker-certs/_data/cert.pem --tlskey=/var/lib/docker/volumes/build-server_jenkins-docker-certs/_data/key.pem -H tcp://localhost:2376 ps

===== How to determine what containers use the docker volume? =====
  docker ps -a --filter volume=VOLUME_NAME_OR_MOUNT_POINT

===== Remove images older than 2 weeks =====

  docker image prune -a --filter "until=336h" && docker system prune --filter "until=336h"

The second command removes dangling build cache which will reclaim the disk space after image deletion.