2. 程式人生 > >docker命令總結

docker命令總結

阿新 • • 發佈：2019-01-16 

[root@i-7bfw3n0q ~]# docker ps -a
CONTAINER ID        IMAGE               COMMAND             CREATED             STATUS                     PORTS               NAMES
a344768b9b11        hello-world         "/hello"            4 minutes ago       Exited (0) 4 minutes ago                       naughty_booth

2檢視所有的映象


[root@i-7bfw3n0q ~]# docker images
REPOSITORY              TAG                 IMAGE ID            CREATED             SIZE
docker.io/hello-world   latest              1815c82652c0        4 weeks ago         1.84 kB

檢視docker的子命令，直接敲docker或完整的docker help就可以了:

[email protected]:~# docker                                         [1
 
/1617]
Usage: docker [OPTIONS] COMMAND [arg...]
 -H=[unix:///var/run/docker.sock]: tcp://host:port to bind/connect to or unix://path/to/socket to use

A self-sufficient runtime for linux containers.

Commands:
    attach    Attach to a running container
    build     Build a container from a Dockerfile
    commit    Create
 
 a new image from a container's changes
    cp        Copy files/folders from the containers filesystem to the host path
    diff      Inspect changes on a container's filesystem
    events    Get real time events from the server
    export    Stream the contents of a container as a tar archive
    history   Show the history of an image
    images    List images
    import    Create a new filesystem image from the contents of a tarball
    info      Display system-wide information
    inspect   Return low-level information on a container
    kill      Kill a running container
    load      Load an image from a tar archive
    login     Register or Login to the docker registry server
    logs      Fetch the logs of a container
    port      Lookup the public-facing port which is NAT-ed to PRIVATE_PORT
    ps        List containers
    pull      Pull an image or a repository from the docker registry server
    push      Push an image or a repository to the docker registry server
    restart   Restart a running container
    rm        Remove one or more containers
    rmi       Remove one or more images
    run       Run a command in a new container
    save      Save an image to a tar archive
    search    Search for an image in the docker index
    start     Start a stopped container
    stop      Stop a running container
    tag       Tag an image into a repository
    top       Lookup the running processes of a container
    version   Show the docker version information
    wait      Block until a container stops, then print its exit code

檢視docker支援的選項:

docker --help

常用命令

總結一下常用命令:

其中<>闊起來的引數為必選，[]闊起來為可選

docker version 檢視docker的版本號，包括客戶端、服務端、依賴的Go等
docker info 檢視系統(docker)層面資訊，包括管理的images, containers數等
docker search <image> 在docker index中搜索image
docker pull <image> 從docker registry server 中下拉image
docker push <image|repository> 推送一個image或repository到registry
docker push <image|repository>:TAG 同上，指定tag
docker inspect <image|container> 檢視image或container的底層資訊
docker images TODO filter out the intermediate image layers (intermediate image layers 是什麼)
docker images -a 列出所有的images
docker ps 預設顯示正在執行中的container
docker ps -l 顯示最後一次建立的container，包括未執行的
docker ps -a 顯示所有的container，包括未執行的
docker logs <container> 檢視container的日誌，也就是執行命令的一些輸出
docker rm <container...> 刪除一個或多個container
docker rm `docker ps -a -q` 刪除所有的container
docker ps -a -q | xargs docker rm 同上, 刪除所有的container
docker rmi <image...> 刪除一個或多個image
docker start/stop/restart <container> 開啟/停止/重啟container
docker start -i <container> 啟動一個container並進入互動模式
docker attach <container> attach一個執行中的container
docker run <image> <command> 使用image建立container並執行相應命令，然後停止
docker run -i -t <image> /bin/bash 使用image建立container並進入互動模式, login shell是/bin/bash
docker run -i -t -p <host_port:contain_port> 將container的埠對映到宿主機的埠
docker commit <container> [repo:tag] 將一個container固化為一個新的image，後面的repo:tag可選
docker build <path> 尋找path路徑下名為的Dockerfile的配置檔案，使用此配置生成新的image
docker build -t repo[:tag] 同上，可以指定repo和可選的tag
docker build - < <dockerfile> 使用指定的dockerfile配置檔案，docker以stdin方式獲取內容，使用此配置生成新的image
docker port <container> <container port> 檢視本地哪個埠對映到container的指定埠，其實用docker ps 也可以看到
使用images新建一個container並登入

使用image來建立container:

root@tankywoo-docker:~# docker images
REPOSITORY          TAG                 IMAGE ID            CREATED             VIRTUAL SIZE
ubuntu              13.10               5e019ab7bf6d        12 days ago         180 MB
ubuntu              saucy               5e019ab7bf6d        12 days ago         180 MB
ubuntu              12.04               74fe38d11401        12 days ago         209.6 MB
ubuntu              precise             74fe38d11401        12 days ago         209.6 MB

root@tankywoo-docker:~# docker run -i -t 74fe38d11401 /bin/bash

root@80c761d06a87:/# cat /etc/issue
Ubuntu 12.04.4 LTS \n \l

使用repository來建立container, 這時預設使用tag為lastest的image:

root@tankywoo-docker:~# docker run -i -t ubuntu /bin/bash
root@442e1cc85a8d:/# uname -a
Linux 442e1cc85a8d 3.8.0-25-generic #37~precise1-Ubuntu SMP Fri Jun 7 16:27:35 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux
root@442e1cc85a8d:/# cat /etc/issue
Ubuntu 14.04 LTS \n \l

root@442e1cc85a8d:/# exit

使用commit將一個container固化為一個image

root@tankywoo-docker:~# docker ps -l
CONTAINER ID        IMAGE               COMMAND             CREATED             STATUS                        PORTS               NAMES
f1fd375204af        ubuntu:12.04        /bin/bash           10 minutes ago      Exited (127) 48 seconds ago                       lonely_colden

root@tankywoo-docker:~# docker images
REPOSITORY          TAG                 IMAGE ID            CREATED             VIRTUAL SIZE
ubuntu              13.10               5e019ab7bf6d        12 days ago         180 MB
ubuntu              saucy               5e019ab7bf6d        12 days ago         180 MB
ubuntu              12.04               74fe38d11401        12 days ago         209.6 MB
提交當前container為一個image，順便帶上作者資訊，並指定repository 和 tag

root@tankywoo-docker:~# docker commit -a "Tanky Woo <me@tankywoo.com>" f1fd375204af ubuntu:test
fe65a2781daea01c67c33f11868abe6d510833bca07b90fc681cdfe98a9196ac

root@tankywoo-docker:~# docker images
REPOSITORY          TAG                 IMAGE ID            CREATED             VIRTUAL SIZE
ubuntu              test                fe65a2781dae        6 seconds ago       209.6 MB
ubuntu              13.10               5e019ab7bf6d        12 days ago         180 MB
ubuntu              saucy               5e019ab7bf6d        12 days ago         180 MB

attach一個執行中的容器

root@tankywoo-docker:~# docker ps -l
CONTAINER ID        IMAGE               COMMAND             CREATED             STATUS                      PORTS               NAMES
e2e6c95f0bf5        ubuntu:test         /bin/bash           11 minutes ago      Exited (0) 11 minutes ago                       suspicious_mccarthy

啟動一個container:

root@tankywoo-docker:~# docker start e2e6c95f0bf5
e2e6c95f0bf5

可以看此container到正在執行中:

root@tankywoo-docker:~# docker ps
CONTAINER ID        IMAGE               COMMAND             CREATED             STATUS              PORTS               NAMES
e2e6c95f0bf5        ubuntu:test         /bin/bash           11 minutes ago      Up 2 seconds                            suspicious_mccarthy

attach這個container:

root@tankywoo-docker:~# docker attach e2e6c95f0bf5

進入container:

root@e2e6c95f0bf5:/#
docker build 構建

root@tankywoo-docker:~# cat Dockerfile
FROM ubuntu:test
ENTRYPOINT echo "Welcome!"
root@tankywoo-docker:~# docker build -t ubuntu:newtest - < Dockerfile
Uploading context 2.048 kB
Uploading context
Step 0 : FROM ubuntu:test
 ---> fe65a2781dae
Step 1 : ENTRYPOINT echo "Welcome!"
 ---> Running in 09a062a296c5
 ---> f8104f05df90
Successfully built f8104f05df90
Removing intermediate container 09a062a296c5
root@tankywoo-docker:~# docker images
REPOSITORY          TAG                 IMAGE ID            CREATED             VIRTUAL SIZE
ubuntu              newtest             f8104f05df90        8 seconds ago       209.6 MB
ubuntu              test                fe65a2781dae        23 minutes ago      209.6 MB
ubuntu              13.10               5e019ab7bf6d        12 days ago         180 MB
ubuntu              saucy               5e019ab7bf6d        12 days ago         180 MB
ubuntu              precise             74fe38d11401        12 days ago         209.6 MB
ubuntu              12.04               74fe38d11401        12 days ago         209.6 MB
ubuntu              12.10               a7cf8ae4e998        12 days ago         171.3 MB
ubuntu              quantal             a7cf8ae4e998        12 days ago         171.3 MB
ubuntu              14.04               99ec81b80c55        12 days ago         266 MB
ubuntu              trusty              99ec81b80c55        12 days ago         266 MB
ubuntu              latest              99ec81b80c55        12 days ago         266 MB
ubuntu              13.04               316b678ddf48        12 days ago         169.4 MB
ubuntu              raring              316b678ddf48        12 days ago         169.4 MB
ubuntu              10.04               3db9c44f4520        2 weeks ago         183 MB
ubuntu              lucid               3db9c44f4520        2 weeks ago         183 MB

root@tankywoo-docker:~# docker run ubuntu:newtest
2014/05/07 17:30:34 Unrecognized input header
root@tankywoo-docker:~# docker run -i -t ubuntu:newtest /bin/bash
Welcome!

TODO: 為何要使用 -i 和 -t

使用 docker run -p 的例子

映象ubuntu:12.04沒有vi，沒法編輯/etc/apt/sources.list

現在本地有一份，想上傳上去

首先對映埠(宿主的2222埠和container的33333埠對映):

docker run -i -t -p 22222:33333 fe65a2781dae /bin/bash

container上監聽33333：

nc -l -p 33333 > /etc/apt/sources.list

本地使用22222埠傳輸:

nc localhost 22222 < sources.list

檢視對映的埠

root@tankywoo-docker:~# docker ps
CONTAINER ID        IMAGE               COMMAND             CREATED             STATUS              PORTS                      NAMES
7abe8e31ac8b        ubuntu:test         /bin/bash           15 minutes ago      Up 15 minutes       0.0.0.0:22222->33333/tcp   hungry_carson
root@tankywoo-docker:~# docker port 7abe8e31ac8b 33333
0.0.0.0:22222
root@tankywoo-docker:~# netstat -tlnp
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address           Foreign Address         State       PID/Program name
tcp        0      0 0.0.0.0:22              0.0.0.0:*               LISTEN      528/sshd
tcp6       0      0 :::22222                :::*                    LISTEN      12946/docker
tcp6       0      0 :::22                   :::*                    LISTEN      528/sshd

但是這裡很好奇為啥是監聽在ipv4的地址上?

刪除image/container遇到的依賴關係

關於刪除時的依賴關係，按照提示刪除就行了

比如刪除images時，需要先刪除通過它建立的所有containers:

[email protected]:~# docker rmi 666c5d65f396 3494872e31a4 62fda5e450d5 5e1829f90d6e 89554a25c998
Error: Conflict, cannot delete 666c5d65f396 because the container 43a7072bac7a is using it
Error: Conflict, cannot delete 3494872e31a4 because the container 40b3cd8b2e42 is using it
Error: Conflict, cannot delete 62fda5e450d5 because the container 5142a3d092a6 is using it
Untagged: test:latest
Deleted: 5e1829f90d6e9ac09645841fe6ab85a0b0f9b28f008a571299a624e566684afe
Deleted: ae5ae236a8e1d946963a7c2c142cc892b1979cb9458e0ecac4d33d2283ace567
Untagged: memchaced:latest
Deleted: 89554a25c998d14c76ff885ddac7cc1a47ae4caf9edcddaa43408b402a1684fb
2014/05/07 15:44:41 Error: failed to remove one or more images
[email protected]:~# docker rm 43a7072bac7a 40b3cd8b2e42 5142a3d092a6
43a7072bac7a
40b3cd8b2e42
5142a3d092a6

且刪除images時也可能會遇到依賴其它的images，比如直接刪除父映象時，就會提示需要先刪除子映象。

可以通過:

docker images --tree

來檢視，不過官方提示 –tree 已經棄用了，會在以後的版本去掉.

首先清空所有containers:

root@tankywoo-docker:~# docker ps -a
CONTAINER ID        IMAGE               COMMAND             CREATED             STATUS              PORTS               NAMES

然後以樹形結構檢視依賴關係:

[email protected]:~# docker images --tree
Warning: '--tree' is deprecated, it will be removed soon. See usage.
└─511136ea3c5a Virtual Size: 0 B
  ├─e2aa6665d371 Virtual Size: 106.1 MB
  │ └─f0ee64c4df74 Virtual Size: 106.3 MB
  │   └─2209cbf9dcd3 Virtual Size: 106.3 MB
  │     └─5e019ab7bf6d Virtual Size: 180 MB Tags: ubuntu:13.10, ubuntu:saucy
  ├─f10ebce2c0e1 Virtual Size: 103.7 MB
  │ └─82cdea7ab5b5 Virtual Size: 103.9 MB
  │   └─5dbd9cb5a02f Virtual Size: 103.9 MB
  │     └─74fe38d11401 Virtual Size: 209.6 MB Tags: ubuntu:precise, ubuntu:12.04
  │       └─fe65a2781dae Virtual Size: 209.6 MB Tags: ubuntu:test
  │         └─276cc641e40e Virtual Size: 388.3 MB Tags: ubuntu:newtest
  ├─ef519c9ee91a Virtual Size: 100.9 MB
  │ └─07302703becc Virtual Size: 101.2 MB
  │   └─cf8dc907452c Virtual Size: 101.2 MB
  │     └─a7cf8ae4e998 Virtual Size: 171.3 MB Tags: ubuntu:12.10, ubuntu:quantal
  ├─5e66087f3ffe Virtual Size: 192.5 MB
  │ └─4d26dd3ebc1c Virtual Size: 192.7 MB
  │   └─d4010efcfd86 Virtual Size: 192.7 MB
  │     └─99ec81b80c55 Virtual Size: 266 MB Tags: ubuntu:14.04, ubuntu:latest, ubuntu:trusty
  ├─02dae1c13f51 Virtual Size: 98.35 MB
  │ └─e7206bfc66aa Virtual Size: 98.54 MB
  │   └─cb12405ee8fa Virtual Size: 98.54 MB
  │     └─316b678ddf48 Virtual Size: 169.4 MB Tags: ubuntu:raring, ubuntu:13.04
  └─6cfa4d1f33fb Virtual Size: 0 B
    └─3db9c44f4520 Virtual Size: 183 MB Tags: ubuntu:10.04, ubuntu:lucid

現在準備刪除12.10版本的父映象 cf8dc907452c, 會提示有衝突，刪不掉:

[email protected]:~# docker rmi cf8dc907452c
Error: Conflict, cf8dc907452c wasn't deleted
2014/05/07 18:49:35 Error: failed to remove one or more images

但是可以刪除葉子節點 a7cf8ae4e998:

[email protected]:~# docker rmi a7cf8ae4e998
Untagged: ubuntu:12.10
Untagged: ubuntu:quantal
Deleted: a7cf8ae4e998c5339e769d6cc466f9133bd4d330a549bb846cb1641cd638247c
Deleted: cf8dc907452c970224551599da573c9e32897fc65286d942625c4c86dabd680d
Deleted: 07302703beccc2ea25f34333decad32ed06446e8a14c020ffbd0be017364b9fe
Deleted: ef519c9ee91a06fc33cefbda1bce27686617761700252dff0397f2c0e269f3c5

containers之間共享資料

docker 的 containers之間共享目錄是通過 volume 。

docker run 命令使用 -v 可以繫結一個volume, -v 可以使用多次，建立多個volume:

root@tankywoo-docker:~# docker run -i -t -v /tmp/tankywoo --name data ubuntu:newtest /bin/bash                         [6/3516]

使用 mount 看到 /tmp/tankywoo 已經被mount了:

[email protected]:/# mount
none on / type aufs (rw,relatime,si=f7ac8b1595d13ed9)

…

/dev/disk/by-uuid/b77aed99-bb9b-4881-9702-4ed204fe5d46 on /tmp/tankywoo type ext3 (rw,relatime,errors=remount-ro,user_xattr,acl,barrier=1,data=ordered)

檢視 /tmp/tankywoo 目錄下，是空的:

root@fec65f523cef:/tmp/tankywoo# ls
root@fec65f523cef:/tmp/tankywoo#

然後在宿主機新建一個container，來繫結這個volume:

按照 docker run 的命令列引數:

  --volumes-from=[]: Mount volumes from the specified container(s)

有問題:

root@tankywoo-docker:/tmp/tankywoo# docker run -i -t --volumes-from=["data"] ubuntu:newtest /bin/bash                       [21/158]
2014/05/08 15:58:19 Error: Cannot start container 5d83dcaf8f0220024e0403a362c0512a8218cfcb45dc911df5d2cd37f9a4e8a4: Container [data] not found. Impossible to mount its volumes
必須像short option的方式使用:

root@tankywoo-docker:/tmp/tankywoo# docker run -i -t --volumes-from data ubuntu:newtest /bin/bash

root@d100d9604b4b:/# mount
none on / type aufs (rw,relatime,si=f7ac8b15b25036d9)
...
/dev/disk/by-uuid/b77aed99-bb9b-4881-9702-4ed204fe5d46 on /tmp/tankywoo type ext3 (rw,relatime,errors=remount-ro,user_xattr,acl,barrier=1,data=ordered)
也可以看到 /tmp/tankywoo 目錄，並且是空的，然後新建一個檔案:

root@d100d9604b4b:/tmp/tankywoo# ls
root@d100d9604b4b:/tmp/tankywoo# touch file
root@d100d9604b4b:/tmp/tankywoo# ls
file

再看看之前那個container:

[email protected]:/tmp/tankywoo# ls
file
也有這個檔案了

參考

退出container但是保持執行

預設情況下，如果使用ctrl-c退出container,那麼container也會stop

按ctrl-p ctrl-q可以退出到宿主機，而保持container仍然在執行

Docker被牆

關於 Docker 被牆，老甘的文章裡提到的修改hosts檔案，先mark，未驗證:

# /etc/hosts
54.234.135.251 get.docker.io 
54.234.135.251 cdn-registry-1.docker.io

遺留的問題

有時docker執行不了任何命令(會卡住)，包括重啟docker server，在日誌裡看到這些:

May  5 17:41:48 tpl-ubuntu12-04 kernel: [99589.489241] unregister_netdevice: waiting for lo to become free. Usage count = 3
May  5 17:41:58 tpl-ubuntu12-04 kernel: [99599.708117] unregister_netdevice: waiting for lo to become free. Usage count = 3
May  5 17:42:08 tpl-ubuntu12-04 kernel: [99609.927057] unregister_netdevice: waiting for lo to become free. Usage count = 3
May  5 17:42:18 tpl-ubuntu12-04 kernel: [99620.145993] unregister_netdevice: waiting for lo to become free. Usage count = 3
May  5 17:42:29 tpl-ubuntu12-04 kernel: [99630.364922] unregister_netdevice: waiting for lo to become free. Usage count = 3
May  5 17:42:39 tpl-ubuntu12-04 kernel: [99640.583850] unregister_netdevice: waiting for lo to become free. Usage count = 3
May  5 17:42:49 tpl-ubuntu12-04 kernel: [99650.802794] unregister_netdevice: waiting for lo to become free. Usage count = 3
May  5 17:42:59 tpl-ubuntu12-04 kernel: [99661.021726] unregister_netdevice: waiting for lo to become free. Usage count = 3
May  5 17:43:10 tpl-ubuntu12-04 kernel: [99671.240662] unregister_netdevice: waiting for lo to become free. Usage count = 3
May  5 17:43:20 tpl-ubuntu12-04 kernel: [99681.459572] unregister_netdevice: waiting for lo to become free. Usage count = 3
May  5 17:43:30 tpl-ubuntu12-04 kernel: [99691.678530] unregister_netdevice: waiting for lo to become free. Usage count = 3
May  5 17:43:40 tpl-ubuntu12-04 kernel: [99701.897432] unregister_netdevice: waiting for lo to become free. Usage count = 3
May  5 17:43:51 tpl-ubuntu12-04 kernel: [99712.128370] unregister_netdevice: waiting for lo to become free. Usage count = 3
May  5 17:44:01 tpl-ubuntu12-04 kernel: [99722.347289] unregister_netdevice: waiting for lo to become free. Usage count = 3
May  5 17:44:11 tpl-ubuntu12-04 kernel: [99732.566226] unregister_netdevice: waiting for lo to become free. Usage count = 3
May  5 17:44:21 tpl-ubuntu12-04 kernel: [99742.785141] unregister_netdevice: waiting for lo to become free. Usage count = 3

什麼是Layer

Docker images are built up in layers. So, for instance, if you need to run WordPress, you would build the Ubuntu layer, add a layer for Apache2 web server, add a PHP layer and then a layer for the WordPress files. Lower layers can be re-used. We might take the PHP layer and layer on Drupal instead of WordPress, or update our WordPress layer with a newer version or Wordpress.

Because we can re-use layers, we can make new docker images very cheaply. We can create a new docker image by changing just a single line of one file and we do not have to rebuild the whole stack.

The beauty of docker images being “just files” means that the difference between two docker images is just a diff of the files they contain.

Hykes Explains Docker

概念上的問題

The Docker Guidebook 的簡單對比:

Image : An image is a read only layer used to build a container. They do not change.

Container : Is basically a self contained runtime environment that is built using one or more images. You can commit your changes to a container and create an image.

index / registry : These are public or private servers where people can upload their repositories so they can easily share what they made.

Repository : A repository is a group of images located in the docker registry. There are two types of repositories, Top level and user repositories. Top level repositories don't have a '/' in the name and they are usually reserved for base images. These Top level repositories is what most people build their repositories on top of. They are controlled by the maintainers of Docker. User repositories are repositories that anyone can upload into the registry and share with other people.

說直接點，Image和Container最容易理解和對比，它倆的關係就像類與類的例項這兩的關係一樣。

其實Index和Registry也有區別，主要就是Index儲存的是使用者資訊、images的checksum；而Registry儲存的是images。具體見官方文件Registry & Index Spec。

另外，關於Repository與Registry和Image又是什麼關係?

[email protected]:~/docker-registry-master# docker images
REPOSITORY              TAG                 IMAGE ID            CREATED             VIRTUAL SIZE
10.2.15.190/tankywoo        latest              276cc641e40e        4 days ago          388.3 MB
10.2.15.190:5000/tankywoo   latest              276cc641e40e        4 days ago          388.3 MB
ubuntu                  newtest             276cc641e40e        4 days ago          388.3 MB
ubuntu                  test                fe65a2781dae        4 days ago          209.6 MB
ubuntu                  13.10               5e019ab7bf6d        2 weeks ago         180 MB
ubuntu                  saucy               5e019ab7bf6d        2 weeks ago         180 MB
ubuntu                  12.04               74fe38d11401        2 weeks ago         209.6 MB
ubuntu                  precise             74fe38d11401        2 weeks ago         209.6 MB
ubuntu                  14.04               99ec81b80c55        2 weeks ago         266 MB
ubuntu                  latest              99ec81b80c55        2 weeks ago         266 MB
ubuntu                  trusty              99ec81b80c55        2 weeks ago         266 MB
ubuntu                  13.04               316b678ddf48        2 weeks ago         169.4 MB
ubuntu                  raring              316b678ddf48        2 weeks ago         169.4 MB
busybox                 latest              2d8e5b282c81        2 weeks ago         2.489 MB
ubuntu                  10.04               3db9c44f4520        2 weeks ago         183 MB
ubuntu                  lucid               3db9c44f4520        2 weeks ago         183 MB

以這個為例

這裡的ubuntu是image名稱嗎？(後面解答)

一個image完整的名稱是:

username/image_name:tag
docker整體和Github非常像，image管理也不例外。

其中，如果username沒有寫，則被認為是官方認證過的image。如前面提到，如果tag沒有寫，則被認為tag是lastest。

另外，如果username寫了，如 tankywoo/ubuntu，則會在官方index中查詢username為tankywoo的ubuntu倉庫；如果寫的如上10.2.15.190:5000/tankywoo，則10.2.15.190:5000則被認為是第三方registry的地址。

所以如上所說，ubuntu並不是image的名稱，而是repository的名稱。

再看看/var/lib/docker/ 下的 repositories-aufs，這是一個repositories的json列表:

[email protected]:~/docker-registry-master# cat /var/lib/docker/repositories-aufs | python -m json.tool
{
    "Repositories": {
        "10.2.15.190/tankywoo": {
            "latest": "276cc641e40e01a18f6bee9e81a576adb7090d3fbae098f809857e0696ccbc87"
        },
        "10.2.15.190:5000/tankywoo": {
            "latest": "276cc641e40e01a18f6bee9e81a576adb7090d3fbae098f809857e0696ccbc87"
        },
        "busybox": {
            "latest": "2d8e5b282c81244037eb15b2068e1c46319c1a42b80493acb128da24b2090739"
        },
        "ubuntu": {
            "10.04": "3db9c44f45209632d6050b35958829c3a2aa256d81b9a7be45b362ff85c54710",
            "12.04": "74fe38d114018aac73c5997b95263090048ec9a1f58f33a1b53f55e92156d53b",
            "13.04": "316b678ddf487a37012630ae3219c8bb78c1f4b58d31c9513c3ea6b88f9e5635",
            "13.10": "5e019ab7bf6deb75b211411ef7257d1e76bf7edee31d9da62a392df98d0529d6",
            "14.04": "99ec81b80c55d906afd8179560fdab0ee93e32c52053816ca1d531597c1ff48f",
            "latest": "99ec81b80c55d906afd8179560fdab0ee93e32c52053816ca1d531597c1ff48f",
            "lucid": "3db9c44f45209632d6050b35958829c3a2aa256d81b9a7be45b362ff85c54710",
            "newtest": "276cc641e40e01a18f6bee9e81

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