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sudo docker kill $(docker ps -q)
sudo docker rm $(docker ps -a -q)

sudo service docker restart     # If this does not work

# enter
docker exec -it my_container bash

#--------------images---------------------
# all active images
docker images

# content-addressable identifier called a digest
docker images --digests | head

# get single image
docker images wordpress

# all images
docker images -a

#return only ID
docker images -q

# find image
docker images --no-trunc|grep memcached

# check image exist
IMAGE=$(docker images | grep "user/repo" | awk '{print $3}')
if [[ -z $IMAGE ]]; then
    dokku_log_fail "user/repo image not found... Did you run 'dokku plugin:install'?"
fi

# -------------------------information--------------------------
docker inspect some-mysql
docker inspect some-mysql | grep IPAddress
docker inspect -f   '{{.Id}}'  SHORT_CONTAINER_ID-or-CONTAINER_NAME

#find ip address
docker inspect --format {{.NetworkSettings.IPAddress}} stupefied_turing
docker inspect --format='{{range .NetworkSettings.Networks}}{{.IPAddress}}{{end}}' ID

# get entrypoint script in image
docker inspect --format '{{range .Config.Entrypoint}}{{.}} {{end}}' "$IMAGE"

# get CMD in docker image
docker inspect --format '{{range .Config.Cmd}}{{.}} {{end}}' "$IMAGE"

# list of files that have changed in the running container.
docker diff some-wordpress

# get running processes inside a given container
docker top $ID

## find out which public port in context is bound to the private port 80 in container.
# find out which public port is bound to the private port 80
docker port some-wordpress 80
docker port 7371 80     #or specific container id
docker port 7371  #or get all forward

$ docker port $ID 6379/tcp
0.0.0.0:32768

### status
# lists the running containers.
docker ps

# lists all the containers, both running and exited
docker ps -a

# gets the IDs of all stopped containers
docker ps -aq -f status=exited

# get id from name
ID=$(docker ps -f status=running | grep -e "$SERVICE_NAME$" | awk '{print $1}') || true

# get docker container name by PID
docker ps -q | xargs docker inspect --format '{{.State.Pid}}, {{.ID}}' | grep "^${PID},"

# get container name by id
local c_name=$(docker inspect -f '{{.Name}}' $(cat $DOKKU_CONTAINER_ID_FILE) | cut -f2 -d"/")

# ----------------------log
docker logs 9ad7

#_------------------------SSH---------------------------
docker run -i -t debian /bin/bash   # during run container
docker exec -it some-wordpress bash


#---------------------run/start/stop container---------------------------
# start a container
docker run --name some-wordpress --link some-mysql:mysql -d wordpress

# launching a container, give it a new hostname
docker run -h CONTAINER -i -t debian /bin/bash

# download image from reposi & run container
docker pull redis
docker run --name myredis -d redis

# Locally Accessible container
docker run -p 127.0.0.1::80 tutum/wordpress

# stop
docker stop some-mysql

# start or active
docker start some-mysql
docker start some-wordpress
docker start -a <containerID>

# pause, Suspends all processes inside the given container
docker pause <container>

# Restarts a container previously paused
docker unpause <name|ID>

# stop & start
docker restart <name|ID>
docker restart `cat /home/dokku/myapp/CONTAINER`

# Sends a signal to the main process (PID 1) in a container, by default send SIGKILL
docker kill -s SIGTRAP $ID

#--------------------remove------------------------
# remove container
docker rm <name|ID>

# clean  all your stopped containers
docker rm -v $(docker ps -aq -f status=exited)

# delete all dead containers
docker rm $(docker ps -a -f "status=dead" -q)

# remove all leftover containers
docker rm $(docker ps -aq)

## remove images:
docker rmi image-ID/repository

# remove all dangling images:
docker rmi $(docker images -q -f dangling=true)

# Remove all untagged images
docker rmi $(docker images | grep "^<none>" | awk "{print $3}")

#------------------------copy file----------------------------
# copy files from local to inside container
docker cp some-nginx:/etc/nginx/nginx.conf /some/nginx.conf

# other solution
sudo cp path-file-host /var/lib/docker/aufs/mnt/FULL_CONTAINER_ID/PATH-NEW-FILE

# solution 2
cd /tmp/somefiles
tar -cv * | docker exec -i elated_hodgkin tar x -C /var/www