feat: GHCR push support - update workflow

.github/workflows/docker-eigenda.yml

@@ -1,16 +1,11 @@
 name: Build nitro-eigenda Docker Image
 on:
   push:
-    branches:
-      - 'main'
-    tags:
-      - 'v*'
-  pull_request:
-    branches: [ "develop" ]
+    tags: ['*']
 
 jobs:
   docker:
-    runs-on: linux-2xl
+    runs-on: ubuntu-latest
     strategy:
       matrix:
         include:
@@ -24,20 +19,14 @@ jobs:
         uses: actions/checkout@v4
         with:
           submodules: 'recursive'
-          ssh-key: ${{ secrets.SSH_KEY }}
 
       - name: Set up QEMU
         uses: docker/setup-qemu-action@v3
 
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v3
-
-      - name: Prepare Environment Variables
-        run: |
-          echo "SHORT_SHA=${GITHUB_SHA::7}" | tee -a $GITHUB_ENV
-          GIT_TAG=$(git tag --points-at HEAD)
-          echo "GIT_TAG=$GIT_TAG" | tee -a $GITHUB_ENV
-          echo "REF_NAME=$(echo ${GIT_TAG:-$GITHUB_REF_NAME} | sed 's/[^a-zA-Z0-9._]/-/g')" | tee -a $GITHUB_ENV
+        with:
+          install: true
 
       - name: Login to GitHub Container Registry
         uses: docker/login-action@v2