有时候使用 Docker Hub 这样的公共仓库可能不方便，用户可以创建一个本地仓库供私人使用。
本节介绍如何使用本地仓库。
docker-registry 是官方提供的工具，可以用于构建私有的镜像仓库。
在安装了 Docker 后，可以通过获取官方 registry 镜像来运行。
| $ sudo docker run -d -p 5000:5000 registry |
| $ sudo docker run \ |
| -e SETTINGS_FLAVOR=s3 \ |
| -e AWS_BUCKET=acme-docker \ |
| -e STORAGE_PATH=/registry \ |
| -e AWS_KEY=AKIAHSHB43HS3J92MXZ \ |
| -e AWS_SECRET=xdDowwlK7TJajV1Y7EoOZrmuPEJlHYcNP2k4j49T \ |
| -e SEARCH_BACKEND=sqlalchemy \ |
| -p 5000:5000 \ |
| registry |
/home/user/registry-conf ）下的配置文件。
| $ sudo docker run -d -p 5000:5000 -v /home/user/registry-conf:/registry-conf -e DOCKER_REGISTRY_CONFIG=/registry-conf/config.yml registry |
/tmp/registry 下。可以通过 -v 参数来将镜像文件存放在本地的指定路径。 例如下面的例子将上传的镜像放到 /opt/data/registry 目录。
| $ sudo docker run -d -p 5000:5000 -v /opt/data/registry:/tmp/registry registry |
对于 Ubuntu 或 CentOS 等发行版，可以直接通过源安装。
| $ sudo apt-get install -y build-essential python-dev libevent-dev python-pip liblzma-dev |
| $ sudo pip install docker-registry |
| $ sudo yum install -y python-devel libevent-devel python-pip gcc xz-devel |
| $ sudo python-pip install docker-registry |
| $ sudo apt-get install build-essential python-dev libevent-dev python-pip libssl-dev liblzma-dev libffi-dev |
| $ git clone https://github.com/docker/docker-registry.git |
| $ cd docker-registry |
| $ sudo python setup.py install |
storage_path 到本地的存储仓库的路径。
| $ cp config/config_sample.yml config/config.yml |
| $ sudo gunicorn -c contrib/gunicorn.py docker_registry.wsgi:application |
| $ sudo gunicorn --access-logfile - --error-logfile - -k gevent -b 0.0.0.0:5000 -w 4 --max-requests 100 docker_registry.wsgi:application |
注：
config/config_sample.yml文件是示例配置文件。
创建好私有仓库之后，就可以使用 docker tag 来标记一个镜像，然后推送它到仓库，别的机器上就可以下载下来了。例如私有仓库地址为 192.168.7.26:5000。
先在本机查看已有的镜像。
| $ sudo docker images |
| REPOSITORY TAG IMAGE ID CREATED VIRTUAL SIZE |
| ubuntu latest ba5877dc9bec 6 weeks ago 192.7 MB |
| ubuntu 14.04 ba5877dc9bec 6 weeks ago 192.7 MB |
docker tag 将 ba58 这个镜像标记为 192.168.7.26:5000/test（格式为 docker tag IMAGE[:TAG] [REGISTRYHOST/][USERNAME/]NAME[:TAG]）。
| $ sudo docker tag ba58 192.168.7.26:5000/test |
| root ~ # docker images |
| REPOSITORY TAG IMAGE ID CREATED VIRTUAL SIZE |
| ubuntu 14.04 ba5877dc9bec 6 weeks ago 192.7 MB |
| ubuntu latest ba5877dc9bec 6 weeks ago 192.7 MB |
| 192.168.7.26:5000/test latest ba5877dc9bec 6 weeks ago 192.7 MB |
docker push 上传标记的镜像。
| $ sudo docker push 192.168.7.26:5000/test |
| The push refers to a repository [192.168.7.26:5000/test] (len: 1) |
| Sending image list |
| Pushing repository 192.168.7.26:5000/test (1 tags) |
| Image 511136ea3c5a already pushed, skipping |
| Image 9bad880da3d2 already pushed, skipping |
| Image 25f11f5fb0cb already pushed, skipping |
| Image ebc34468f71d already pushed, skipping |
| Image 2318d26665ef already pushed, skipping |
| Image ba5877dc9bec already pushed, skipping |
| Pushing tag for rev [ba5877dc9bec] on {http://192.168.7.26:5000/v1/repositories/test/tags/latest} |
| $ curl http://192.168.7.26:5000/v1/search |
| {"num_results": 7, "query": "", "results": [{"description": "", "name": "library/miaxis_j2ee"}, {"description": "", "name": "library/tomcat"}, {"description": "", "name": "library/ubuntu"}, {"description": "", "name": "library/ubuntu_office"}, {"description": "", "name": "library/desktop_ubu"}, {"description": "", "name": "dockerfile/ubuntu"}, {"description": "", "name": "library/test"}]} |
{"description": "", "name": "library/test"}，表明镜像已经被成功上传了。
现在可以到另外一台机器去下载这个镜像。
| $ sudo docker pull 192.168.7.26:5000/test |
| Pulling repository 192.168.7.26:5000/test |
| ba5877dc9bec: Download complete |
| 511136ea3c5a: Download complete |
| 9bad880da3d2: Download complete |
| 25f11f5fb0cb: Download complete |
| ebc34468f71d: Download complete |
| 2318d26665ef: Download complete |
| $ sudo docker images |
| REPOSITORY TAG IMAGE ID CREATED VIRTUAL SIZE |
| 192.168.7.26:5000/test latest ba5877dc9bec 6 weeks ago 192.7 MB |
127.0.0.1:5000。例如：
| $ wget https://github.com/yeasy/docker_practice/raw/master/_local/push_images.sh; sudo chmod a+x push_images.sh |
| $ ./push_images.sh ubuntu:latest centos:centos7 |
| The registry server is 127.0.0.1 |
| Uploading ubuntu:latest... |
| The push refers to a repository [127.0.0.1:5000/ubuntu] (len: 1) |
| Sending image list |
| Pushing repository 127.0.0.1:5000/ubuntu (1 tags) |
| Image 511136ea3c5a already pushed, skipping |
| Image bfb8b5a2ad34 already pushed, skipping |
| Image c1f3bdbd8355 already pushed, skipping |
| Image 897578f527ae already pushed, skipping |
| Image 9387bcc9826e already pushed, skipping |
| Image 809ed259f845 already pushed, skipping |
| Image 96864a7d2df3 already pushed, skipping |
| Pushing tag for rev [96864a7d2df3] on {http://127.0.0.1:5000/v1/repositories/ubuntu/tags/latest} |
| Untagged: 127.0.0.1:5000/ubuntu:latest |
| Done |
| Uploading centos:centos7... |
| The push refers to a repository [127.0.0.1:5000/centos] (len: 1) |
| Sending image list |
| Pushing repository 127.0.0.1:5000/centos (1 tags) |
| Image 511136ea3c5a already pushed, skipping |
| 34e94e67e63a: Image successfully pushed |
| 70214e5d0a90: Image successfully pushed |
| Pushing tag for rev [70214e5d0a90] on {http://127.0.0.1:5000/v1/repositories/centos/tags/centos7} |
| Untagged: 127.0.0.1:5000/centos:centos7 |
| Done |
