docker Learning - Local Registry

The most direct way to preserve and disseminate the image is to use Docker H ub, which is maintained by the company Docker public Regsitry, users can save their own image to Docker H ub free of the repository. If you do not want others to access your images, you can also buy private repository.
Generally, we can use the Docker H ub upload and download the image, though very convenient, but there are some restrictions, such as:
1, requires external network connections, and upload and download speeds slow
2, upload Docker H ub mirrored anyone can access, although you can use private repositroy, but not free
3, for security reasons many organizations do not allow the image into the external network

The solution is a single room local Registry.
Docker has the Registry open while the Docker H ub also has an official mirror Registry.
We can run your own Registry in Docker in

Use dockerfile build httpd

Before using warehouse, first we build a httpd image, save it to the local
first create dockerfile directories and files created dokcerfile

cd ~
mkdir dokcerfile 
cd dockerfile
touch dockerfie

Edit follows dockerfile

then builds an http mirror

docker build -t httpd:v11 -f dockerfile /root/dockerfile

As shown below, was successfully constructed

check image

docker images

Start registry container

First created in the root directory / myregistry directory for storing image data of
the current mirror is used registry: 2

cd /
mkdir /myregistry 

Use the following command to create a registry container

docker run -d -p 5000:5000 -v /myregistry:/var/lib/registry registry:2

Description:
. 1, -d background starting container
2, -p mapped to port 5000 of container 5000 to Host port. 5000 is a registry service port
3, -v the container / var / lib / regsitry Host mapped to the directory / myregistry, for storing image data

By renaming docker tag image, so that the matching registry, as follows:

docker tag yangchao/httpd:v1 127.0.0.1:5000/yangchao/httpd:v1

The httpd: v11 change the format Registry requirements in the following format:

Only the mirror may be omitted Docker Hub registry-host: [port]
in the following manner, by renaming docker tag image, so that the matching registry

docker tag httpd:v11 127.0.0.1:5000/yangchao/httpd:v11

Use dokcer image command to check the mirror

Then yangchao / httpd: v11 uploaded to the Registry

docker push 127.0.0.1:5000/yangchao/httpd:v11

And then view the Registry in the mirror

curl 127.0.0.1:5000/v2/_catalog

You can view the image in / myregistry directory

so far has been created on the local registry