Cheatsheet
Last updated
Last updated
shows which version of docker you have running.
creates a container but does not start it.
allows the container to be renamed.
creates and starts a container in one operation.
deletes a container.
updates a container's resource limits.
starts a container so it is running.
stops a running container.
stops and starts a container.
pauses a running container, "freezing" it in place.
will unpause a running container.
blocks until running container stops.
sends a SIGKILL to a running container.
will connect to a running container.
The setting is a bit strange -- 1024 means 100% of the CPU, so if you want the container to take 50% of all CPU cores, you should specify 512:docker run -it -c 512 agileek/cpuset-test
Note that Docker can still see all of the CPUs inside the container -- it just isn't using all of them.
Import a container as an image from file:cat my_container.tar.gz | docker import - my_image:my_tagExport an existing container:docker export my_container | gzip > my_container.tar.gz
CPU Constraints You can limit CPU, either using a percentage of all CPUs, or by using specific cores.For example, you can tell the setting.
You can also only use some CPU cores using :docker run -it --cpuset-cpus=0,4,6 agileek/cpuset-test
Memory Constraints: You can also set on Docker:docker run -it -m 300M ubuntu:14.04 /bin/bash
shows running containers.
gets logs from container.
looks at all the info on a container (including IP address).
gets events from container.
shows public facing port of container.
shows running processes in container.
shows containers' resource usage statistics.
shows changed files in the container's FS.
copies files or folders between a container and the local filesystem.
turns container filesystem into tarball archive stream to STDOUT.
to execute a command in container.
shows all images.
creates an image from a tarball.
creates image from Dockerfile.
creates image from a container, pausing it temporarily if it is running.
removes an image.
loads an image from a tar archive as STDIN, including images and tags (as of 0.7).
saves an image to a tar archive stream to STDOUT with all parent layers, tags & versions (as of 0.7).
shows history of image.
tags an image to a name (local or registry).
Sets the Base Image for subsequent instructions.
Set the Author field of the generated images.
execute any commands in a new layer on top of the current image and commit the results.
provide defaults for an executing container.
informs Docker that the container listens on the specified network ports at runtime. NOTE: does not actually make ports accessible.
sets environment variable.
copies new files, directories or remote file to container. Invalidates caches. Avoid ADD and use COPY instead.
copies new files or directories to container. By default this copies as root regardless of the USER/WORKDIR settings. Use --chown=<user>:<group> to give ownership to another user/group. (Same for ADD.)
configures a container that will run as an executable.
creates a mount point for externally mounted volumes or other containers.
sets the user name for following RUN / CMD / ENTRYPOINT commands.
sets the working directory.
defines a build-time variable.
adds a trigger instruction when the image is used as the base for another build.
sets the system call signal that will be sent to the container to exit.
apply key/value metadata to your images, containers, or daemons.
override default shell is used by docker to run commands.
tells docker how to test a container to check that it is still working.
to login to a registry.
to logout from a registry.
searches registry for image.
pulls an image from registry to local machine.
pushes an image to the registry from local machine.
NAME Create a new network (default type: bridge).
NAME Remove one or more networks by name or identifier. No containers can be connected to the network when deleting it.
List networks
NAME Display detailed information on one or more networks.
NETWORK CONTAINER Connect a container to a network
NETWORK CONTAINER Disconnect a container from a network.