Windows Note: This release of Docker deprecates the Boot2Docker command line in favor of Docker Machine. Use the Docker Toolbox to install Docker Machine as well as the other Docker tools. You install Docker using Docker Toolbox. Docker Toolbox includes the following Docker tools: Docker Machine for running the docker-machine binary Docker Engine for running the docker binary Kitematic, the Docker GUI a shell preconfigured for a Docker command-line environment Oracle VM VirtualBox Because t

Manage keys for content trust Trust for an image tag is managed through the use of keys. Docker’s content trust makes use of five different types of keys: Key Description root key Root of content trust for an image tag. When content trust is enabled, you create the root key once. Also known as the offline key, because it should be kept offline. targets This key allows you to sign image tags, to manage delegations including delegated keys or permitted delegation paths. Also known as the reposito

IPv6 with Docker The information in this section explains IPv6 with the Docker default bridge. This is a bridge network named bridge created automatically when you install Docker. As we are running out of IPv4 addresses the IETF has standardized an IPv4 successor, Internet Protocol Version 6 , in RFC 2460. Both protocols, IPv4 and IPv6, reside on layer 3 of the OSI model. How IPv6 works on Docker By default, the Docker server configures the container network for IPv4 only. You can enable IPv4/I

Embedded DNS server in user-defined networks The information in this section covers the embedded DNS server operation for containers in user-defined networks. DNS lookup for containers connected to user-defined networks works differently compared to the containers connected to default bridge network. Note: In order to maintain backward compatibility, the DNS configuration in default bridge network is retained with no behavioral change. Please refer to the DNS in default bridge network for more

port Usage: port [options] SERVICE PRIVATE_PORT Options: --protocol=proto tcp or udp [default: tcp] --index=index index of the container if there are multiple instances of a service [default: 1] Prints the public port for a port binding.

export Usage: docker export [OPTIONS] CONTAINER Export the contents of a container's filesystem as a tar archive --help Print usage -o, --output="" Write to a file, instead of STDOUT The docker export command does not export the contents of volumes associated with the container. If a volume is mounted on top of an existing directory in the container, docker export will export the contents of the underlying directory, not the contents of the volume. Refer to Backup, restore

tag Usage: docker tag [OPTIONS] IMAGE[:TAG] [REGISTRYHOST/][USERNAME/]NAME[:TAG] Tag an image into a repository --help Print usage You can group your images together using names and tags, and then upload them to Share Images via Repositories.

Journald logging driver The journald logging driver sends container logs to the systemd journal. Log entries can be retrieved using the journalctl command, through use of the journal API, or using the docker logs command. In addition to the text of the log message itself, the journald log driver stores the following metadata in the journal with each message: Field Description CONTAINER_ID The container ID truncated to 12 characters. CONTAINER_ID_FULL The full 64-character container ID. CONTAINE

port Usage: docker port [OPTIONS] CONTAINER [PRIVATE_PORT[/PROTO]] List port mappings for the CONTAINER, or lookup the public-facing port that is NAT-ed to the PRIVATE_PORT --help Print usage You can find out all the ports mapped by not specifying a PRIVATE_PORT, or just a specific mapping: $ docker ps CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES b650456536c7 busybo

top Usage: docker top [OPTIONS] CONTAINER [ps OPTIONS] Display the running processes of a container --help Print usage