cp Usage: docker cp [OPTIONS] CONTAINER:SRC_PATH DEST_PATH | - docker cp [OPTIONS] SRC_PATH | - CONTAINER:DEST_PATH Copy files/folders between a container and the local filesystem -L, --follow-link Always follow symbol link in SRC_PATH --help Print usage The docker cp utility copies the contents of SRC_PATH to the DEST_PATH. You can copy from the container’s file system to the local machine or the reverse, from the local filesystem to the container. If

Docker Compose Compose is a tool for defining and running multi-container Docker applications. To learn more about Compose refer to the following documentation: Compose Overview Install Compose Getting Started Get started with Django Get started with Rails Get started with WordPress Frequently asked questions Command line reference Compose file reference Environment file To see a detailed list of changes for past and current releases of Docker Compose, please refer to the CHANGELOG.

build Usage: docker build [OPTIONS] PATH | URL | - Build a new image from the source code at PATH --build-arg=[] Set build-time variables --cpu-shares CPU Shares (relative weight) --cgroup-parent="" Optional parent cgroup for the container --cpu-period=0 Limit the CPU CFS (Completely Fair Scheduler) period --cpu-quota=0 Limit the CPU CFS (Completely Fair Scheduler) quota --cpuset-cpus=""

commit Usage: docker commit [OPTIONS] CONTAINER [REPOSITORY[:TAG]] Create a new image from a container's changes -a, --author="" Author (e.g., "John Hannibal Smith <hannibal@a-team.com>") -c, --change=[] Apply specified Dockerfile instructions while committing the image --help Print usage -m, --message="" Commit message -p, --pause=true Pause container during commit It can be useful to commit a container’s file changes or settings into a new image.

attach Usage: docker attach [OPTIONS] CONTAINER Attach to a running container --detach-keys="<sequence>" Set up escape key sequence --help Print usage --no-stdin Do not attach STDIN --sig-proxy=true Proxy all received signals to the process The docker attach command allows you to attach to a running container using the container’s ID or name, either to view its ongoing output or to control it interactively. Y

Docker Swarm Discovery Docker Swarm comes with multiple discovery backends. You use a hosted discovery service with Docker Swarm. The service maintains a list of IPs in your cluster. This page describes the different types of hosted discovery available to you. These are: Using a distributed key/value store The recommended way to do node discovery in Swarm is Docker’s libkv project. The libkv project is an abstraction layer over existing distributed key/value stores. As of this writing, the proj

Digital Ocean Create Docker machines on Digital Ocean. You need to create a personal access token under “Apps & API” in the Digital Ocean Control Panel and pass that to docker-machine create with the --digitalocean-access-token option. $ docker-machine create --driver digitalocean --digitalocean-access-token=aa9399a2175a93b17b1c86c807e08d3fc4b79876545432a629602f61cf6ccd6b test-this Options: --digitalocean-access-token: required Your personal access token for the Digital Ocean API. --digi

Docker and the Device Mapper storage driver Device Mapper is a kernel-based framework that underpins many advanced volume management technologies on Linux. Docker’s devicemapper storage driver leverages the thin provisioning and snapshotting capabilities of this framework for image and container management. This article refers to the Device Mapper storage driver as devicemapper, and the kernel framework as Device Mapper. Note: The Commercially Supported Docker Engine (CS-Engine) running on RHE

Deprecated Engine Features The following list of features are deprecated in Engine. -e and --email flags on docker login Deprecated In Release: v1.11 Target For Removal In Release: v1.13 The docker login command is removing the ability to automatically register for an account with the target registry if the given username doesn’t exist. Due to this change, the email flag is no longer required, and will be deprecated. Separator (:) of --security-opt flag on docker run Deprecated In Release: v

Deploy the application You’ve deployed the load balancer, the discovery backend, and a Swarm cluster so now you can build and deploy the voting application itself. You do this by starting a number of “Dockerized applications” running in containers. The diagram below shows the final application configuration including the overlay container network, voteapp. In this procedure you will connect containers to this network. The voteapp network is available to all Docker hosts using the Consul discov