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push-to-registry.md

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Push the Drupal image to a Docker registry

Once you have your Drupal Project ready for deployment to Kubernetes, you have to push it into a Docker Registry which the Kubernetes cluster is able to pull from.

This guide assumes you're using the Raspberry Pi Dramble project for deployment—this Kubernetes cluster includes a built-in Docker Registry to make Docker image management easy—but the same process would apply using any Docker Registry, whether Docker Hub, Quay, Google Container Registry, Amazon ECR, or some other registry. Please see those registries' documentation for specific connection information.

  1. Build the Docker image for the site using one of the following commands:

    # To build for a local Vagrant-based cluster or an Intel/AMD cluster:
docker build -t geerlingguy/drupal-for-kubernetes:latest .

# To build for Raspberry Pi (e.g. the Raspberry Pi Dramble cluster):
docker build -t geerlingguy/drupal-for-kubernetes:arm --build-arg DRUPAL_BASE_IMAGE=geerlingguy/drupal:latest-arm32v7 .

  2. After the image is built, tag it with the registry URL so it can be pushed:

    # For Vagrant/Intel/AMD:
docker tag geerlingguy/drupal-for-kubernetes:latest registry.pidramble.test/geerlingguy/drupal-for-kubernetes:latest

# For Raspberry Pi:
docker tag geerlingguy/drupal-for-kubernetes:arm registry.pidramble.test/geerlingguy/drupal-for-kubernetes:arm

At this point, if you run docker images locally, you should see something like:

$ docker images
REPOSITORY                                                  TAG      IMAGE ID       CREATED              SIZE
geerlingguy/drupal-for-kubernetes                           latest   104e5df60d95   About a minute ago   645MB
registry.pidramble.test/geerlingguy/drupal-for-kubernetes   latest   104e5df60d95   About a minute ago   645MB
<none>                                                      <none>   a18f6568edb7   2 minutes ago        283MB
composer                                                    latest   803583e27ea7   6 days ago           157MB
geerlingguy/drupal                                          latest   17fa5bbef5a1   8 days ago           499MB

Assuming the Pi Dramble cluster is running and the registry is accessible at registry.pidramble.test (see the Raspberry Pi Dramble's documentation for more on registry setup), you can push the image to the Pi Dramble registry:

# For Vagrant/Intel/AMD:
docker push registry.pidramble.test/geerlingguy/drupal-for-kubernetes:latest

# For Raspberry Pi:
docker push registry.pidramble.test/geerlingguy/drupal-for-kubernetes:arm