Pull images from Northflank

Whenever you build a repository on Northflank the resulting image is stored in the Northflank container repository, ready to be deployed.

You can log in to the Northflank container registry to pull and run images locally, or use built images as the base image in your Dockerfile. This can be useful if, for example, you are building from a monorepo and want to share a base image to reduce build times for different projects within it.

A reference to an image in the Northflank CR takes the format:

registry.northflank.com/<projectId>/<serviceId>:<buildId>

• projectId is ID of the project your image was built in
• serviceId is the service or job used to build your image
• buildId can either be the Northflank-generated name for the build, the Git commit SHA, or latest to use the most recent build

You can pull Docker images that have been built on Northflank using the Docker CLI .

Create an API token or copy an existing one, and log in to the Northflank registry using Docker:

docker login -u [USERNAME] -p [API_TOKEN] https://registry.northflank.com/

You can find the relevant commands to pull and run the Docker image for a build by navigating to the builds page on a build service, combined service, or a job that builds from a git repository. Find the successful build in the list and click on it to open the logs and metrics view. In the top-right corner click the pull docker image button to view instructions and commands for that specific build.

You can then use this Docker pull command to pull your image from the Northflank registry:

docker pull registry.northflank.com/<projectId>/<serviceId>:<buildId>

The image can be run with the command:

docker run -it registry.northflank.com/<projectId>/<serviceId>:<buildId>

You can use an image built on Northflank as your base image for a multi-stage build .

Find the URL for your image by following the steps to pull an image.

You can then use the image in your Dockerfile to build on Northflank, and also locally as long as you have pulled the image using Docker. You can supply the URL directly, or by using build arguments (recommended).

ARG PROJECT_ID
ARG SERVICE_ID
ARG BUILD_ID

# method one
FROM registry.northflank.com/${PROJECT_ID}/${SERVICE_ID}:${BUILD_ID}

# method two: named build image
FROM registry.northflank.com/${PROJECT_ID}/${SERVICE_ID}:${BUILD_ID} as builder