👷 Authenticate to GitHub Container Registry

Author: shnizzedy

.circleci/config.yml

@@ -36,6 +36,9 @@ commands:
            cd ..
   build-images:
     steps:
+      - run:
+          name: "Logging into GitHub Container Registry"
+          command: echo "${GITHUB_REGISTRY_TOKEN}" | docker login https://docker.pkg.github.com -u ${GITHUB_REGISTRY_NAME} --password-stdin
       - run:
           name: "Building Docker image"
           command: |