chore: add github action to update remote docker images on a new tag push

.github/workflows/docker-release.yml

@@ -0,0 +1,38 @@
+name: Update Docker Image Tag from "latest" to 'testnet'
+
+on:
+  workflow_dispatch:    # Allows manual triggering of the workflow
+  push:
+    tags:
+      - v*
+
+jobs:
+  retag-and-push:
+    name: Retag and Push Docker Image
+    runs-on: ubuntu-latest
+
+    steps:
+      # Step 1: Log in to Docker Hub
+      - name: Log in to Docker Hub
+        uses: docker/login-action@v2
+        with:
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_PASSWORD }}
+
+      # Step 2: Pull the latest images
+      - name: Pull Docker images
+        run: |
+          docker pull portalnetwork/trin:latest
+          docker pull portalnetwork/trin:latest-bridge
+
+      # Step 3: Retag the images
+      - name: Retag Docker images
+        run: |
+          docker image tag portalnetwork/trin:latest portalnetwork/trin:testnet
+          docker image tag portalnetwork/trin:latest-bridge portalnetwork/trin:bridge
+
+      # Step 4: Push the new tags to Docker Hub
+      - name: Push new tags to Docker Hub
+        run: |
+          docker push portalnetwork/trin:testnet
+          docker push portalnetwork/trin:bridge          

book/src/developers/contributing/releases/deployment.md

@@ -38,19 +38,6 @@
 - Announce in Discord #trin that you're about to run the deployment
 - Make sure to schedule plenty of time to react to deployment issues
 
-### Update Docker images
-Docker images are how Ansible moves the binaries to the nodes. Update the Docker tags with:
-```shell
-docker pull portalnetwork/trin:latest
-docker pull portalnetwork/trin:latest-bridge
-docker image tag portalnetwork/trin:latest portalnetwork/trin:testnet
-docker image tag portalnetwork/trin:latest-bridge portalnetwork/trin:bridge
-docker push portalnetwork/trin:testnet
-docker push portalnetwork/trin:bridge
-```
-
-This step directs Ansible to use the current master version of trin. Read [about the tags](#what-do-the-docker-tags-mean) to understand more.
-
 ### Run ansible
 - Check monitoring tools to understand network health, and compare against post-deployment, eg~
     - [Glados](https://glados.ethdevops.io/)

book/src/developers/contributing/releases/release_checklist.md

@@ -29,17 +29,18 @@ git pull --rebase upstream master
 ```
 2. Create a new git tag with the chosen version, for example:
 ```bash
-git tag v0.1.0-alpha.15
+git tag v0.1.1
  ```
 3. Push the tag to the upstream repository:
 ```bash
-git push upstream v0.1.0-alpha.15
+git push upstream v0.1.1
 ```
-4. Wait for the github actions release job to finish. It will create automatically a draft release with all precompiled binaries included.
+4. Wait for the github actions release job to finish. It will create automatically a draft release with all precompiled binaries included 
+and will update the remote docker images for deployment.
 This should take 15-20 min to complete.
 5. Find the draft release generated by the github bot in releases and edit the template by completing and deleting all checklists.
 Write a short summary if available. Add any clarifying information that's helpful about the release.
-6. Scroll to the bottom, check the `Set as a pre-release` box and click `Publish release`.
+6. Scroll to the bottom, and click `Publish release`.
 
 ### Build Instructions
 * [Linux](../build_instructions/linux.md)