moby/docs/sources/reference/api/docker_remote_api_v1.4.rst

:title: Remote API v1.4
:description: API Documentation for Docker
:keywords: API, Docker, rcli, REST, documentation

:orphan:

======================
Docker Remote API v1.4
======================

.. contents:: Table of Contents

1. Brief introduction
=====================

- The Remote API is replacing rcli
- Default port in the docker daemon is 4243
- The API tends to be REST, but for some complex commands, like attach or pull, the HTTP connection is hijacked to transport stdout stdin and stderr

2. Endpoints
============

2.1 Containers
--------------

List containers
***************

.. http:get:: /containers/json

	List containers

	**Example request**:

	.. sourcecode:: http

	   GET /containers/json?all=1&before=8dfafdbc3a40&size=1 HTTP/1.1
	   
	**Example response**:

	.. sourcecode:: http

	   HTTP/1.1 200 OK
	   Content-Type: application/json
	   
	   [
		{
			"Id": "8dfafdbc3a40",
			"Image": "ubuntu:latest",
			"Command": "echo 1",
			"Created": 1367854155,
			"Status": "Exit 0",
			"Ports":"",
			"SizeRw":12288,
			"SizeRootFs":0
		},
		{
			"Id": "9cd87474be90",
			"Image": "ubuntu:latest",
			"Command": "echo 222222",
			"Created": 1367854155,
			"Status": "Exit 0",
			"Ports":"",
			"SizeRw":12288,
			"SizeRootFs":0
		},
		{
			"Id": "3176a2479c92",
			"Image": "centos:latest",
			"Command": "echo 3333333333333333",
			"Created": 1367854154,
			"Status": "Exit 0",
			"Ports":"",
			"SizeRw":12288,
			"SizeRootFs":0
		},
		{
			"Id": "4cb07b47f9fb",
			"Image": "fedora:latest",
			"Command": "echo 444444444444444444444444444444444",
			"Created": 1367854152,
			"Status": "Exit 0",
			"Ports":"",
			"SizeRw":12288,
			"SizeRootFs":0
		}
	   ]
 
	:query all: 1/True/true or 0/False/false, Show all containers. Only running containers are shown by default
	:query limit: Show ``limit`` last created containers, include non-running ones.
	:query since: Show only containers created since Id, include non-running ones.
	:query before: Show only containers created before Id, include non-running ones.
	:query size: 1/True/true or 0/False/false, Show the containers sizes
	:statuscode 200: no error
	:statuscode 400: bad parameter
	:statuscode 500: server error


Create a container
******************

.. http:post:: /containers/create

	Create a container

	**Example request**:

	.. sourcecode:: http

	   POST /containers/create HTTP/1.1
	   Content-Type: application/json

	   {
		"Hostname":"",
		"User":"",
		"Memory":0,
		"MemorySwap":0,
		"AttachStdin":false,
		"AttachStdout":true,
		"AttachStderr":true,
		"PortSpecs":null,
		"Privileged": false,
		"Tty":false,
		"OpenStdin":false,
		"StdinOnce":false,
		"Env":null,
		"Cmd":[
			"date"
		],
		"Dns":null,
		"Image":"ubuntu",
		"Volumes":{},
		"VolumesFrom":"",
		"WorkingDir":""

	   }
	   
	**Example response**:

	.. sourcecode:: http

	   HTTP/1.1 201 OK
	   Content-Type: application/json

	   {
		"Id":"e90e34656806"
		"Warnings":[]
	   }
	
	:jsonparam config: the container's configuration
	:statuscode 201: no error
	:statuscode 404: no such container
	:statuscode 406: impossible to attach (container not running)
	:statuscode 500: server error


Inspect a container
*******************

.. http:get:: /containers/(id)/json

	Return low-level information on the container ``id``

	**Example request**:

	.. sourcecode:: http

	   GET /containers/4fa6e0f0c678/json HTTP/1.1
	   
	**Example response**:

	.. sourcecode:: http

	   HTTP/1.1 200 OK
	   Content-Type: application/json

	   {
			"Id": "4fa6e0f0c6786287e131c3852c58a2e01cc697a68231826813597e4994f1d6e2",
			"Created": "2013-05-07T14:51:42.041847+02:00",
			"Path": "date",
			"Args": [],
			"Config": {
				"Hostname": "4fa6e0f0c678",
				"User": "",
				"Memory": 0,
				"MemorySwap": 0,
				"AttachStdin": false,
				"AttachStdout": true,
				"AttachStderr": true,
				"PortSpecs": null,
				"Tty": false,
				"OpenStdin": false,
				"StdinOnce": false,
				"Env": null,
				"Cmd": [
					"date"
				],
				"Dns": null,
				"Image": "ubuntu",
				"Volumes": {},
				"VolumesFrom": "",
				"WorkingDir":""

			},
			"State": {
				"Running": false,
				"Pid": 0,
				"ExitCode": 0,
				"StartedAt": "2013-05-07T14:51:42.087658+02:01360",
				"Ghost": false
			},
			"Image": "b750fe79269d2ec9a3c593ef05b4332b1d1a02a62b4accb2c21d589ff2f5f2dc",
			"NetworkSettings": {
				"IpAddress": "",
				"IpPrefixLen": 0,
				"Gateway": "",
				"Bridge": "",
				"PortMapping": null
			},
			"SysInitPath": "/home/kitty/go/src/github.com/dotcloud/docker/bin/docker",
			"ResolvConfPath": "/etc/resolv.conf",
			"Volumes": {}
	   }

	:statuscode 200: no error
	:statuscode 404: no such container
	:statuscode 409: conflict between containers and images
	:statuscode 500: server error


List processes running inside a container
*****************************************

.. http:get:: /containers/(id)/top

	List processes running inside the container ``id``

	**Example request**:

	.. sourcecode:: http

	   GET /containers/4fa6e0f0c678/top HTTP/1.1

	**Example response**:

	.. sourcecode:: http

	   HTTP/1.1 200 OK
	   Content-Type: application/json

	   {
		"Titles":[
			"USER",
			"PID",
			"%CPU",
			"%MEM",
			"VSZ",
			"RSS",
			"TTY",
			"STAT",
			"START",
			"TIME",
			"COMMAND"
			],
		"Processes":[
			["root","20147","0.0","0.1","18060","1864","pts/4","S","10:06","0:00","bash"],
			["root","20271","0.0","0.0","4312","352","pts/4","S+","10:07","0:00","sleep","10"]
		]
	   }

	:query ps_args: ps arguments to use (eg. aux)
	:statuscode 200: no error
	:statuscode 404: no such container
	:statuscode 500: server error


Inspect changes on a container's filesystem
*******************************************

.. http:get:: /containers/(id)/changes

	Inspect changes on container ``id`` 's filesystem

	**Example request**:

	.. sourcecode:: http

	   GET /containers/4fa6e0f0c678/changes HTTP/1.1

	   
	**Example response**:

	.. sourcecode:: http

	   HTTP/1.1 200 OK
	   Content-Type: application/json
	   
	   [
		{
			"Path":"/dev",
			"Kind":0
		},
		{
			"Path":"/dev/kmsg",
			"Kind":1
		},
		{
			"Path":"/test",
			"Kind":1
		}
	   ]

	:statuscode 200: no error
	:statuscode 404: no such container
	:statuscode 500: server error


Export a container
******************

.. http:get:: /containers/(id)/export

	Export the contents of container ``id``

	**Example request**:

	.. sourcecode:: http

	   GET /containers/4fa6e0f0c678/export HTTP/1.1

	   
	**Example response**:

	.. sourcecode:: http

	   HTTP/1.1 200 OK
	   Content-Type: application/octet-stream
	   
	   {{ STREAM }}

	:statuscode 200: no error
	:statuscode 404: no such container
	:statuscode 500: server error


Start a container
*****************

.. http:post:: /containers/(id)/start

        Start the container ``id``

        **Example request**:

        .. sourcecode:: http

           POST /containers/(id)/start HTTP/1.1
           Content-Type: application/json

           {
                "Binds":["/tmp:/tmp"],
                "LxcConf":[{"Key":"lxc.utsname","Value":"docker"}]
           }

        **Example response**:

        .. sourcecode:: http

           HTTP/1.1 204 No Content
           Content-Type: text/plain

        :jsonparam hostConfig: the container's host configuration (optional)
        :statuscode 204: no error
        :statuscode 404: no such container
        :statuscode 500: server error


Stop a container
****************

.. http:post:: /containers/(id)/stop

	Stop the container ``id``

	**Example request**:

	.. sourcecode:: http

	   POST /containers/e90e34656806/stop?t=5 HTTP/1.1
	   
	**Example response**:

	.. sourcecode:: http

	   HTTP/1.1 204 OK
	   	
	:query t: number of seconds to wait before killing the container
	:statuscode 204: no error
	:statuscode 404: no such container
	:statuscode 500: server error


Restart a container
*******************

.. http:post:: /containers/(id)/restart

	Restart the container ``id``

	**Example request**:

	.. sourcecode:: http

	   POST /containers/e90e34656806/restart?t=5 HTTP/1.1
	   
	**Example response**:

	.. sourcecode:: http

	   HTTP/1.1 204 OK
	   	
	:query t: number of seconds to wait before killing the container
	:statuscode 204: no error
	:statuscode 404: no such container
	:statuscode 500: server error


Kill a container
****************

.. http:post:: /containers/(id)/kill

	Kill the container ``id``

	**Example request**:

	.. sourcecode:: http

	   POST /containers/e90e34656806/kill HTTP/1.1
	   
	**Example response**:

	.. sourcecode:: http

	   HTTP/1.1 204 OK
	   	
	:statuscode 204: no error
	:statuscode 404: no such container
	:statuscode 500: server error


Attach to a container
*********************

.. http:post:: /containers/(id)/attach

	Attach to the container ``id``

	**Example request**:

	.. sourcecode:: http

	   POST /containers/16253994b7c4/attach?logs=1&stream=0&stdout=1 HTTP/1.1
	   
	**Example response**:

	.. sourcecode:: http

	   HTTP/1.1 200 OK
	   Content-Type: application/vnd.docker.raw-stream

	   {{ STREAM }}
	   	
	:query logs: 1/True/true or 0/False/false, return logs. Default false
	:query stream: 1/True/true or 0/False/false, return stream. Default false
	:query stdin: 1/True/true or 0/False/false, if stream=true, attach to stdin. Default false
	:query stdout: 1/True/true or 0/False/false, if logs=true, return stdout log, if stream=true, attach to stdout. Default false
	:query stderr: 1/True/true or 0/False/false, if logs=true, return stderr log, if stream=true, attach to stderr. Default false
	:statuscode 200: no error
	:statuscode 400: bad parameter
	:statuscode 404: no such container
	:statuscode 500: server error


Wait a container
****************

.. http:post:: /containers/(id)/wait

	Block until container ``id`` stops, then returns the exit code

	**Example request**:

	.. sourcecode:: http

	   POST /containers/16253994b7c4/wait HTTP/1.1
	   
	**Example response**:

	.. sourcecode:: http

	   HTTP/1.1 200 OK
	   Content-Type: application/json

	   {"StatusCode":0}
	   	
	:statuscode 200: no error
	:statuscode 404: no such container
	:statuscode 500: server error


Remove a container
*******************

.. http:delete:: /containers/(id)

	Remove the container ``id`` from the filesystem

	**Example request**:

        .. sourcecode:: http

           DELETE /containers/16253994b7c4?v=1 HTTP/1.1

        **Example response**:

        .. sourcecode:: http

	   HTTP/1.1 204 OK

	:query v: 1/True/true or 0/False/false, Remove the volumes associated to the container. Default false
        :statuscode 204: no error
	:statuscode 400: bad parameter
        :statuscode 404: no such container
        :statuscode 500: server error


Copy files or folders from a container
**************************************

.. http:post:: /containers/(id)/copy

	Copy files or folders of container ``id``

	**Example request**:

	.. sourcecode:: http

	   POST /containers/4fa6e0f0c678/copy HTTP/1.1
	   Content-Type: application/json

	   {
		"Resource":"test.txt"
	   }

	**Example response**:

	.. sourcecode:: http

	   HTTP/1.1 200 OK
	   Content-Type: application/octet-stream
	   
	   {{ STREAM }}

	:statuscode 200: no error
	:statuscode 404: no such container
	:statuscode 500: server error


2.2 Images
----------

List Images
***********

.. http:get:: /images/(format)

	List images ``format`` could be json or viz (json default)

	**Example request**:

	.. sourcecode:: http

	   GET /images/json?all=0 HTTP/1.1

	**Example response**:

	.. sourcecode:: http

	   HTTP/1.1 200 OK
	   Content-Type: application/json
	   
	   [
		{
			"Repository":"ubuntu",
			"Tag":"precise",
			"Id":"b750fe79269d",
			"Created":1364102658,
			"Size":24653,
			"VirtualSize":180116135
		},
		{
			"Repository":"ubuntu",
			"Tag":"12.04",
			"Id":"b750fe79269d",
			"Created":1364102658,
			"Size":24653,
			"VirtualSize":180116135
		}
	   ]


	**Example request**:

	.. sourcecode:: http

	   GET /images/viz HTTP/1.1

	**Example response**:

	.. sourcecode:: http

	   HTTP/1.1 200 OK
	   Content-Type: text/plain

	   digraph docker {
	   "d82cbacda43a" -> "074be284591f"
	   "1496068ca813" -> "08306dc45919"
	   "08306dc45919" -> "0e7893146ac2"
	   "b750fe79269d" -> "1496068ca813"
	   base -> "27cf78414709" [style=invis]
	   "f71189fff3de" -> "9a33b36209ed"
	   "27cf78414709" -> "b750fe79269d"
	   "0e7893146ac2" -> "d6434d954665"
	   "d6434d954665" -> "d82cbacda43a"
	   base -> "e9aa60c60128" [style=invis]
	   "074be284591f" -> "f71189fff3de"
	   "b750fe79269d" [label="b750fe79269d\nubuntu",shape=box,fillcolor="paleturquoise",style="filled,rounded"];
	   "e9aa60c60128" [label="e9aa60c60128\ncentos",shape=box,fillcolor="paleturquoise",style="filled,rounded"];
	   "9a33b36209ed" [label="9a33b36209ed\nfedora",shape=box,fillcolor="paleturquoise",style="filled,rounded"];
	   base [style=invisible]
	   }
 
	:query all: 1/True/true or 0/False/false, Show all containers. Only running containers are shown by default
	:statuscode 200: no error
	:statuscode 400: bad parameter
	:statuscode 500: server error


Create an image
***************

.. http:post:: /images/create

	Create an image, either by pull it from the registry or by importing it

	**Example request**:

        .. sourcecode:: http

           POST /images/create?fromImage=ubuntu HTTP/1.1

        **Example response**:

        .. sourcecode:: http

           HTTP/1.1 200 OK
	   Content-Type: application/json

	   {"status":"Pulling..."}
	   {"status":"Pulling", "progress":"1/? (n/a)"}
	   {"error":"Invalid..."}
	   ...

        :query fromImage: name of the image to pull
	:query fromSrc: source to import, - means stdin
        :query repo: repository
	:query tag: tag
	:query registry: the registry to pull from
        :statuscode 200: no error
        :statuscode 500: server error


Insert a file in an image
*************************

.. http:post:: /images/(name)/insert

	Insert a file from ``url`` in the image ``name`` at ``path``

	**Example request**:

        .. sourcecode:: http

           POST /images/test/insert?path=/usr&url=myurl HTTP/1.1

	**Example response**:

        .. sourcecode:: http

           HTTP/1.1 200 OK
	   Content-Type: application/json

	   {"status":"Inserting..."}
	   {"status":"Inserting", "progress":"1/? (n/a)"}
	   {"error":"Invalid..."}
	   ...

	:statuscode 200: no error
        :statuscode 500: server error


Inspect an image
****************

.. http:get:: /images/(name)/json

	Return low-level information on the image ``name``

	**Example request**:

	.. sourcecode:: http

	   GET /images/centos/json HTTP/1.1

	**Example response**:

        .. sourcecode:: http

           HTTP/1.1 200 OK
	   Content-Type: application/json

	   {
		"id":"b750fe79269d2ec9a3c593ef05b4332b1d1a02a62b4accb2c21d589ff2f5f2dc",
		"parent":"27cf784147099545",
		"created":"2013-03-23T22:24:18.818426-07:00",
		"container":"3d67245a8d72ecf13f33dffac9f79dcdf70f75acb84d308770391510e0c23ad0",
		"container_config":
			{
				"Hostname":"",
				"User":"",
				"Memory":0,
				"MemorySwap":0,
				"AttachStdin":false,
				"AttachStdout":false,
				"AttachStderr":false,
				"PortSpecs":null,
				"Tty":true,
				"OpenStdin":true,
				"StdinOnce":false,
				"Env":null,
				"Cmd": ["/bin/bash"]
				,"Dns":null,
				"Image":"centos",
				"Volumes":null,
				"VolumesFrom":"",
				"WorkingDir":""
			},
		"Size": 6824592
	   }

	:statuscode 200: no error
	:statuscode 404: no such image
	:statuscode 409: conflict between containers and images
	:statuscode 500: server error


Get the history of an image
***************************

.. http:get:: /images/(name)/history

        Return the history of the image ``name``

        **Example request**:

        .. sourcecode:: http

           GET /images/fedora/history HTTP/1.1

        **Example response**:

        .. sourcecode:: http

           HTTP/1.1 200 OK
	   Content-Type: application/json

	   [
		{
			"Id":"b750fe79269d",
			"Created":1364102658,
			"CreatedBy":"/bin/bash"
		},
		{
			"Id":"27cf78414709",
			"Created":1364068391,
			"CreatedBy":""
		}
	   ]

        :statuscode 200: no error
        :statuscode 404: no such image
        :statuscode 500: server error


Push an image on the registry
*****************************

.. http:post:: /images/(name)/push

   Push the image ``name`` on the registry

   **Example request**:

   .. sourcecode:: http

      POST /images/test/push HTTP/1.1
      {{ authConfig }}

   **Example response**:

   .. sourcecode:: http

    HTTP/1.1 200 OK
    Content-Type: application/json

   {"status":"Pushing..."}
   {"status":"Pushing", "progress":"1/? (n/a)"}
   {"error":"Invalid..."}
   ...

   :query registry: the registry you wan to push, optional
   :statuscode 200: no error
        :statuscode 404: no such image
        :statuscode 500: server error


Tag an image into a repository
******************************

.. http:post:: /images/(name)/tag

	Tag the image ``name`` into a repository

        **Example request**:

        .. sourcecode:: http
			
	   POST /images/test/tag?repo=myrepo&force=0 HTTP/1.1

	**Example response**:

        .. sourcecode:: http

           HTTP/1.1 200 OK

	:query repo: The repository to tag in
	:query force: 1/True/true or 0/False/false, default false
	:statuscode 200: no error
	:statuscode 400: bad parameter
	:statuscode 404: no such image
	:statuscode 409: conflict
        :statuscode 500: server error


Remove an image
***************

.. http:delete:: /images/(name)

	Remove the image ``name`` from the filesystem 
	
	**Example request**:

	.. sourcecode:: http

	   DELETE /images/test HTTP/1.1

	**Example response**:

        .. sourcecode:: http

	   HTTP/1.1 200 OK
	   Content-type: application/json

	   [
	    {"Untagged":"3e2f21a89f"},
	    {"Deleted":"3e2f21a89f"},
	    {"Deleted":"53b4f83ac9"}
	   ]

	:statuscode 200: no error
        :statuscode 404: no such image
	:statuscode 409: conflict
        :statuscode 500: server error


Search images
*************

.. http:get:: /images/search

	Search for an image in the docker index
	
	**Example request**:

        .. sourcecode:: http

           GET /images/search?term=sshd HTTP/1.1

	**Example response**:

	.. sourcecode:: http

	   HTTP/1.1 200 OK
	   Content-Type: application/json
	   
	   [
		{
			"Name":"cespare/sshd",
			"Description":""
		},
		{
			"Name":"johnfuller/sshd",
			"Description":""
		},
		{
			"Name":"dhrp/mongodb-sshd",
			"Description":""
		}
	   ]

	   :query term: term to search
	   :statuscode 200: no error
	   :statuscode 500: server error


2.3 Misc
--------

Build an image from Dockerfile via stdin
****************************************

.. http:post:: /build

    Build an image from Dockerfile via stdin

    **Example request**:

    .. sourcecode:: http

        POST /build HTTP/1.1

        {{ STREAM }}

    **Example response**:

    .. sourcecode:: http

        HTTP/1.1 200 OK

        {{ STREAM }}


    The stream must be a tar archive compressed with one of the following algorithms:
    identity (no compression), gzip, bzip2, xz. The archive must include a file called
    `Dockerfile` at its root. It may include any number of other files, which will be
    accessible in the build context (See the ADD build command).

    The Content-type header should be set to "application/tar".

    :query t: repository name (and optionally a tag) to be applied to the resulting image in case of success
    :query q: suppress verbose build output
    :query nocache: do not use the cache when building the image
    :statuscode 200: no error
    :statuscode 500: server error


Check auth configuration
************************

.. http:post:: /auth

        Get the default username and email

        **Example request**:

        .. sourcecode:: http

           POST /auth HTTP/1.1
	   Content-Type: application/json

	   {
		"username":"hannibal",
		"password:"xxxx",
		"email":"hannibal@a-team.com",
		"serveraddress":"https://index.docker.io/v1/"
	   }

        **Example response**:

        .. sourcecode:: http

           HTTP/1.1 200 OK

        :statuscode 200: no error
        :statuscode 204: no error
        :statuscode 500: server error


Display system-wide information
*******************************

.. http:get:: /info

	Display system-wide information
	
	**Example request**:

        .. sourcecode:: http

           GET /info HTTP/1.1

        **Example response**:

        .. sourcecode:: http

           HTTP/1.1 200 OK
	   Content-Type: application/json

	   {
		"Containers":11,
		"Images":16,
		"Debug":false,
		"NFd": 11,
		"NGoroutines":21,
		"MemoryLimit":true,
		"SwapLimit":false,
		"IPv4Forwarding":true
	   }

        :statuscode 200: no error
        :statuscode 500: server error


Show the docker version information
***********************************

.. http:get:: /version

	Show the docker version information

	**Example request**:

        .. sourcecode:: http

           GET /version HTTP/1.1

        **Example response**:

        .. sourcecode:: http

           HTTP/1.1 200 OK
	   Content-Type: application/json

	   {
		"Version":"0.2.2",
		"GitCommit":"5a2a5cc+CHANGES",
		"GoVersion":"go1.0.3"
	   }

    :statuscode 200: no error
    :statuscode 500: server error


Create a new image from a container's changes
*********************************************

.. http:post:: /commit

    Create a new image from a container's changes

    **Example request**:

    .. sourcecode:: http

       POST /commit?container=44c004db4b17&m=message&repo=myrepo HTTP/1.1
       Content-Type: application/json
   
       {
           "Cmd": ["cat", "/world"],
           "PortSpecs":["22"]
       }

    **Example response**:

    .. sourcecode:: http

       HTTP/1.1 201 OK
	   Content-Type: application/vnd.docker.raw-stream

       {"Id":"596069db4bf5"}

    :query container: source container
    :query repo: repository
    :query tag: tag
    :query m: commit message
    :query author: author (eg. "John Hannibal Smith <hannibal@a-team.com>")
    :statuscode 201: no error
    :statuscode 404: no such container
    :statuscode 500: server error


Monitor Docker's events
***********************

.. http:get:: /events

	Get events from docker, either in real time via streaming, or via polling (using `since`)

	**Example request**:

	.. sourcecode:: http

           GET /events?since=1374067924

        **Example response**:

        .. sourcecode:: http

           HTTP/1.1 200 OK
	   Content-Type: application/json

	   {"status":"create","id":"dfdf82bd3881","from":"ubuntu:latest","time":1374067924}
	   {"status":"start","id":"dfdf82bd3881","from":"ubuntu:latest","time":1374067924}
	   {"status":"stop","id":"dfdf82bd3881","from":"ubuntu:latest","time":1374067966}
	   {"status":"destroy","id":"dfdf82bd3881","from":"ubuntu:latest","time":1374067970}

	:query since: timestamp used for polling
        :statuscode 200: no error
        :statuscode 500: server error


3. Going further
================

3.1 Inside 'docker run'
-----------------------

Here are the steps of 'docker run' :

* Create the container
* If the status code is 404, it means the image doesn't exists:
        * Try to pull it
        * Then retry to create the container
* Start the container
* If you are not in detached mode:
        * Attach to the container, using logs=1 (to have stdout and stderr from the container's start) and stream=1
* If in detached mode or only stdin is attached:
	* Display the container's id


3.2 Hijacking
-------------

In this version of the API, /attach, uses hijacking to transport stdin, stdout and stderr on the same socket. This might change in the future.

3.3 CORS Requests
-----------------

To enable cross origin requests to the remote api add the flag "-api-enable-cors" when running docker in daemon mode.

.. code-block:: bash

   docker -d -H="192.168.1.9:4243" -api-enable-cors