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autodock

Perform actions based on a webhook from the Docker Hub.

Idea: Make a simple Docker container that accepts a webhook from the Docker hub and triggers an action (like pulling a fresh copy of a Docker image and restarting services).

Quick run

docker run \
  --publish 8080:8080 \
  -e 'AUTODOCK_WEBAPP=training/webapp:echo yay' \
  rgbkrk/autodock

Replace training/webapp with the name of the container from the Docker hub you want to trigger on and the command you want to run. You're probably in the mood to make it docker pull that image for you automatically and restart some services.

You'll also need to set up the webhook on your Docker repo page (located at https://registry.hub.docker/com/u/{username}/{repo}/settings/webhooks):

Once it's set up, you can use a test webhook

core@nbviewer ~ $ docker run --publish 8080:8080 -e 'AUTODOCK_NBCACHE=rgbkrk/nbcache:echo IM IN YOUR LOGS' rgbkrk/autodock
2014/07/28 23:26:56 Docker repository actions:
2014/07/28 23:26:56     rgbkrk/nbcache: [echo IM IN YOUR LOGS]
2014/07/28 23:32:55 Processing rgbkrk/nbcache
2014/07/28 23:32:55 Running [echo IM IN YOUR LOGS]
2014/07/28 23:32:55 IM IN YOUR LOGS

TODO

  • Make configuration suck less
  • Create default pull option
  • Actually figure out how to link it up with the host to do docker actions

Development

Simply clone this repo, start hacking then run:

docker build -t autodock .

Make sure you run with some set of AUTODOCKs set up:

docker run -e 'AUTODOCK_YAY=example/app:echo hi' -p 8080:8080 autodock

You can then verify this with your favorite way to hit up a URL:

Python, with Requests

>>> import json
>>> requests.post("http://localhost:8080/autodock/v1/",
...               data=json.dumps({"repository":{"repo_name":"example/app"}}),
...               headers={'Content-type': 'application/json'})
<Response [200]>

cURL

curl -X POST -H "Content-Type: application/json" \
     -d '{"repository":{"repo_name":"something/else"}}' \
     127.0.0.1:8080/autodock/v1/

Example Run

$ docker build -t autodock .
Sending build context to Docker daemon 102.4 kB
Sending build context to Docker daemon
Step 0 : FROM google/golang-runtime
# Executing 2 build triggers
Step onbuild-0 : ADD . /gopath/src/app/
 ---> b51b592cfe60
Step onbuild-1 : RUN /bin/go-build
 ---> Running in 2d9377aecd4c
 ---> 88a51b3970fb
 ---> 88a51b3970fb
Removing intermediate container b81a681a3019
Removing intermediate container 2d9377aecd4c
Successfully built 88a51b3970fb
$ docker run -e 'AUTODOCK_YAY=example/app:echo hi' -p 8080:8080 autodock
2014/07/28 14:58:45 Docker repository actions:
2014/07/28 14:58:45     example/app: [echo hi]
2014/07/28 14:58:57 Processing example/app
2014/07/28 14:58:57 Running [echo hi]
2014/07/28 14:58:57 hi
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rgbkrk
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