ci: publish docker-image

.github/workflows/push-image.yml

@@ -0,0 +1,45 @@
+name: Create and publish a Docker image
+
+on:
+  pull_request:
+    branches: [main]
+  push:
+    branches: [main]
+
+# Defines two custom environment variables for the workflow. These are used for the Container registry domain, and a name for the Docker image that this workflow builds.
+env:
+  REGISTRY: ghcr.io
+  IMAGE_NAME: ${{ github.repository }}
+
+jobs:
+  build-and-push-image:
+    runs-on: ubuntu-latest
+
+    # Sets the permissions granted to the `GITHUB_TOKEN` for the actions in this job.
+    permissions:
+      contents: read
+      packages: write
+      attestations: write
+      id-token: write
+
+    steps:
+      - uses: actions/checkout@v4
+      - uses: DeterminateSystems/nix-installer-action@main
+      - name: Build docker image
+        run: nix build .#cctl-docker-image
+      # Uses the `docker/login-action` action to log in to the Container registry registry using the account and password that will publish the packages. Once published, the packages are scoped to the account defined here.
+      - name: Log in to the Container registry
+        uses: docker/login-action@65b78e6e13532edd9afa3aa52ac7964289d1a9c1
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+      - name: tag the docker image
+        run: |
+          IMAGE_NAME="ghcr.io/${{ github.repository_owner }}/$(basename ${{ github.repository }})"
+          docker load -i result
+          docker tag cctl:cctl-casper-node-1.5.7 $IMAGE_NAME:cctl-casper-node-1.5.7
+      - name: push
+        run: |
+          IMAGE_NAME="ghcr.io/${{ github.repository_owner }}/$(basename ${{ github.repository }})"
+          docker push $IMAGE_NAME:cctl-casper-node-1.5.7