fix docker login issue.

Author: shahnawaz-creator

.github/workflows/build-&-publish-docker-image.yml

@@ -64,7 +64,7 @@ jobs:
       - name: Docker Login
         env:
           DOCKER_CONFIG: /tmp/docker-config-${{ github.run_id }}
-        run: docker login -u ${{ secrets.DOCKER_USERNAME }} -p ${{ secrets.DOCKER_PASSWORD }}
+        run: docker login -u ${{ secrets.DOCKERHUB_USERNAME }} -p ${{ secrets.DOCKERHUB_PASSWORD }}
 
       # - name: Get changed files using defaults
       #   id: changed-files
@@ -137,7 +137,7 @@ jobs:
       - name: Docker Login
         env:
           DOCKER_CONFIG: /tmp/docker-config-${{ github.run_id }}
-        run: docker login -u ${{ secrets.DOCKER_USERNAME }} -p ${{ secrets.DOCKER_PASSWORD }}
+        run: docker login -u ${{ secrets.DOCKERHUB_USERNAME }} -p ${{ secrets.DOCKERHUB_PASSWORD }}
 
       - name: Clone blobber
         uses: actions/checkout@v3