Push an image to the container registry

Question

I have installed docker on gcp instance and I have an image that I wish to push to the container registry. But I am stuck as to how should I tag an image with the registry name? can somebody help?

Answer 1

To tag the local image with the registry name:

1. Determine the registry name:

   1. Choose a hostname, which specifies the region of the registry's storage. This region is not your location, but the location where the images will be stored. For example, if you are in Australia, you may want to use the host in Asia.

      The four options are:

      • gcr.io hosts the images in the United States, but the location may change in the future

      • us.gcr.io hosts the image in the United States, in a separate storage bucket from images hosted by gcr.io

      • eu.gcr.io hosts the images in the European Union

      • asia.gcr.io hosts the images in Asia

      In the console, the images' hostname will be listed under Location.

   2. Choose an image name, which can be different from the image's name on your local machine.

   3. Combine the hostname, your Google Cloud Platform Console project ID, and image name:

      [HOSTNAME]/[PROJECT-ID]/[IMAGE]
      

2. Tag the local image with the registry name by using the command:

   docker tag [SOURCE_IMAGE] [HOSTNAME]/[PROJECT-ID]/[IMAGE]

   where [SOURCE_IMAGE] is the local image name or image ID.

   This command names the image with the registry name and applies the tag latest. If you want to apply a different tag, then use the command:

   docker tag [SOURCE_IMAGE] [HOSTNAME]/[PROJECT-ID]/[IMAGE]:[TAG]