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tutum/builder

A docker image that builds, tests and pushes docker images from code repositories.

Usage

Build from local folder

Run the following docker command in the folder that you want to build and push:

docker run --rm -it --privileged -v $(pwd):/app -v $HOME/.dockercfg:/.dockercfg:r -e IMAGE_NAME=$IMAGE_NAME tutum/builder

Where:

  • $IMAGE_NAME is the name of the image to create with an optional tag, i.e. tutum/hello-world:latest

This will use the ~/.dockercfg file which should be prepopulated with credentials by using docker login <registry> in the host. Alternatively, you can use $USERNAME, $PASSWORD and $EMAIL as described below.

Build from Git repository

Run the following docker command:

docker run --rm -it --privileged -e GIT_REPO=$GIT_REPO -e IMAGE_NAME=$IMAGE_NAME -e USERNAME=$USERNAME -e PASSWORD=$PASSWORD -e EMAIL=$EMAIL -e DOCKERFILE_PATH=$DOCKERFILE_PATH tutum/builder

Where:

  • $GIT_REPO is the git repository to clone and build, i.e. https://github.com/tutumcloud/quickstart-python.git
  • $GIT_TAG (optional, defaults to master) is the tag/branch/commit to checkout after clone, i.e. master
  • $DOCKERFILE_PATH (optional, defaults to /) is the relative path to the root of the repository where the Dockerfile is present, i.e. /
  • $IMAGE_NAME is the name of the image to create with an optional tag, i.e. tutum/quickstart-python:latest
  • $USERNAME is the username to use to log into the registry using docker login
  • $PASSWORD is the password to use to log into the registry using docker login
  • $EMAIL (optional) is the email to use to log into the registry using docker login
  • $SKIP_CLEAN (optional) skip clearing local docker images after docker push. Must be set to 'true' to skip the cleanup.

Build from compressed tarball

Run the following docker command:

docker run --rm -it --privileged -e TGZ_URL=$TGZ_URL -e DOCKERFILE_PATH=$DOCKERFILE_PATH -e IMAGE_NAME=$IMAGE_NAME -e USERNAME=$USERNAME -e PASSWORD=$PASSWORD -e EMAIL=$EMAIL tutum/builder

Where:

  • $TGZ_URL is the URL to the compressed tarball (.tgz) to download and build, i.e. https://github.com/tutumcloud/docker-hello-world/archive/v1.0.tar.gz
  • $DOCKERFILE_PATH (optional, defaults to /) is the relative path to the root of the tarball where the Dockerfile is present, i.e. /docker-hello-world-1.0
  • $IMAGE_NAME is the name of the image to create with an optional tag, i.e. tutum/hello-world:latest
  • $USERNAME is the username to use to log into the registry using docker login
  • $PASSWORD is the password to use to log into the registry using docker login
  • $EMAIL (optional) is the email to use to log into the registry using docker login
  • $SKIP_CLEAN (optional) skip clearing local docker images after docker push. Must be set to 'true' to skip the cleanup.

Testing

If you want to test your app before building, create a fig-test.yml file in your repository root with a service called sut which will be run for testing. You can specify another file name in $FIGTEST_FILENAME if required. If that container exits successfully (exit code 0), the build will continue; otherwise, the build will fail and the image won't be built nor pushed.

Example fig-test.yml file for a Django app that depends on a Redis cache:

sut:
  build: .
  links:
    - redis
  command: python manage.py test
redis:
  image: tutum/redis
  environment:
    - REDIS_PASS=password

Notes

Caching images for faster builds

If you want to cache the images used for building and testing, run the following:

docker run --name builder_cache tutum/builder true

And then run your builds as above appending --volumes-from builder_cache to them to reuse already downloaded image layers.

Adding credentials via .dockercfg

If your tests depend on private images, you can pass their credentials either by mounting your local .dockercfg file inside the container appending -v $HOME/.dockercfg:/.dockercfg:r, or by providing the contents of this file via an environment variable called $DOCKERCFG: -e DOCKERCFG=$(cat $HOME/.dockercfg)

Using the host docker daemon instead of docker-in-docker

If you want to use the host docker daemon instead of letting the container run its own, mount the host's docker unix socket inside the container by appending -v /var/run/docker.sock:/var/run/docker.sock:rw to the docker run command.

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octoblu
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