Docker

Context

GitHub Actions should automatically build and publish a Docker image for each release. If GitHub Actions failed, you can manually build and publish a Docker image using this guide.

Prerequisites

1. Navigate to https://github.com/settings/tokens and generate a new token with the write:packages scope.

Steps

1. Verify that a Docker image with the correct tag doesn't already exist for the release you're trying to publish on GHCR

2. In a new terminal

   # Set the CR_PAT environment variable to your token
   export CR_PAT=YOUR_TOKEN
   # Login to the GitHub Container Registry
   echo $CR_PAT | docker login ghcr.io -u USERNAME --password-stdin
   
   # Tell docker to use buildx for the multiple platform support
   docker buildx create --use
   # Build the image, in this example the v2.2.0-mocha image
   docker buildx build --platform linux/amd64,linux/arm64 -t ghcr.io/celestiaorg/celestia-app:v2.2.0-mocha --push .
   

3. Verify that a Docker image with the correct tag was published on GHCR.