distribution/contrib/compose/README.md

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# Docker Compose V1 + V2 registry
This compose configuration configures a `v1` and `v2` registry behind an `nginx`
proxy. By default, you can access the combined registry at `localhost:5000`.
The configuration does not support pushing images to `v2` and pulling from `v1`.
If a `docker` client has a version less than 1.6, Nginx will route its requests
to the 1.0 registry. Requests from newer clients will route to the 2.0 registry.
### Install Docker Compose
1. Open a new terminal on the host with your `distribution` source.
2. Get the `docker-compose` binary.
$ sudo wget https://github.com/docker/compose/releases/download/1.1.0/docker-compose-`uname -s`-`uname -m` -O /usr/local/bin/docker-compose
This command installs the binary in the `/usr/local/bin` directory.
3. Add executable permissions to the binary.
$ sudo chmod +x /usr/local/bin/docker-compose
## Build and run with Compose
1. In your terminal, navigate to the `distribution/contrib/compose` directory
This directory includes a single `docker-compose.yml` configuration.
nginx:
build: "nginx"
ports:
- "5000:5000"
links:
- registryv1:registryv1
- registryv2:registryv2
registryv1:
image: registry
ports:
- "5000"
registryv2:
build: "../../"
ports:
- "5000"
This configuration builds a new `nginx` image as specified by the
`nginx/Dockerfile` file. The 1.0 registry comes from Docker's official
public image. Finally, the registry 2.0 image is built from the
`distribution/Dockerfile` you've used previously.
2. Get a registry 1.0 image.
$ docker pull registry:0.9.1
The Compose configuration looks for this image locally. If you don't do this
step, later steps can fail.
3. Build `nginx`, the registry 2.0 image, and
$ docker-compose build
registryv1 uses an image, skipping
Building registryv2...
Step 0 : FROM golang:1.4
...
Removing intermediate container 9f5f5068c3f3
Step 4 : COPY docker-registry-v2.conf /etc/nginx/docker-registry-v2.conf
---> 74acc70fa106
Removing intermediate container edb84c2b40cb
Successfully built 74acc70fa106
The commmand outputs its progress until it completes.
4. Start your configuration with compose.
$ docker-compose up
Recreating compose_registryv1_1...
Recreating compose_registryv2_1...
Recreating compose_nginx_1...
Attaching to compose_registryv1_1, compose_registryv2_1, compose_nginx_1
...
5. In another terminal, display the running configuration.
$ docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
a81ad2557702 compose_nginx:latest "nginx -g 'daemon of 8 minutes ago Up 8 minutes 80/tcp, 443/tcp, 0.0.0.0:5000->5000/tcp compose_nginx_1
0618437450dd compose_registryv2:latest "registry cmd/regist 8 minutes ago Up 8 minutes 0.0.0.0:32777->5000/tcp compose_registryv2_1
aa82b1ed8e61 registry:latest "docker-registry" 8 minutes ago Up 8 minutes 0.0.0.0:32776->5000/tcp compose_registryv1_1
### Explore a bit
1. Check for TLS on your `nginx` server.
$ curl -v https://localhost:5000
* Rebuilt URL to: https://localhost:5000/
* Hostname was NOT found in DNS cache
* Trying 127.0.0.1...
* Connected to localhost (127.0.0.1) port 5000 (#0)
* successfully set certificate verify locations:
* CAfile: none
CApath: /etc/ssl/certs
* SSLv3, TLS handshake, Client hello (1):
* SSLv3, TLS handshake, Server hello (2):
* SSLv3, TLS handshake, CERT (11):
* SSLv3, TLS alert, Server hello (2):
* SSL certificate problem: self signed certificate
* Closing connection 0
curl: (60) SSL certificate problem: self signed certificate
More details here: http://curl.haxx.se/docs/sslcerts.html
2. Tag the `v1` registry image.
$ docker tag registry:latest localhost:5000/registry_one:latest
2. Push it to the localhost.
$ docker push localhost:5000/registry_one:latest
If you are using the 1.6 Docker client, this pushes the image the `v2 `registry.
4. Use `curl` to list the image in the registry.
$ curl -v -X GET http://localhost:32777/v2/registry1/tags/list
* Hostname was NOT found in DNS cache
* Trying 127.0.0.1...
* Connected to localhost (127.0.0.1) port 32777 (#0)
> GET /v2/registry1/tags/list HTTP/1.1
> User-Agent: curl/7.36.0
> Host: localhost:32777
> Accept: */*
>
< HTTP/1.1 200 OK
< Content-Type: application/json; charset=utf-8
< Docker-Distribution-Api-Version: registry/2.0
< Date: Tue, 14 Apr 2015 22:34:13 GMT
< Content-Length: 39
<
{"name":"registry1","tags":["latest"]}
* Connection #0 to host localhost left intact
This example refers to the specific port assigned to the 2.0 registry. You saw
this port earlier, when you used `docker ps` to show your running containers.