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# Start docker daemon
docker -d
# start a container with an interactive shell
docker run -ti <image_name> /bin/bash
# "shell" into a running container (docker-1.3+)
docker exec -ti <container_name> bash
# inspect a running container
docker inspect <container_name> (or <container_id>)
# Get the process ID for a container
# Source: https://github.com/jpetazzo/nsenter
docker inspect --format {{.State.Pid}} <container_name_or_ID>
# List the current mounted volumes for a container (and pretty print)
# Source:
# http://nathanleclaire.com/blog/2014/07/12/10-docker-tips-and-tricks-that-will-make-you-sing-a-whale-song-of-joy/
docker inspect --format='{{json .Volumes}}' <container_id> | python -mjson.tool
# Copy files/folders between a container and your host
docker cp foo.txt mycontainer:/foo.txt
# list currently running containers
docker ps
# list all containers
docker ps -a
# list all images
docker images
IF: dpkg: error: error creating new backup file '/var/lib/dpkg/status-old': Invalid cross-device link E: Sub-process /usr/bin/dpkg returned an error code (2)
DO: echo N | sudo tee /sys/module/overlay/parameters/metacopy
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