use default token

Author: kenoi1

.github/workflows/build_test.yml

@@ -20,7 +20,7 @@ jobs:
       repository: ${{ steps.docker-environment.outputs.repository }}
       source_branch: ${{ steps.github-environment.outputs.source_branch }}
       target_branch: ${{ steps.github-environment.outputs.target_branch }}
-      
+
     steps:
       - name: Checkout Repository
         uses: actions/checkout@v4
@@ -78,12 +78,13 @@ jobs:
         uses: docker/setup-buildx-action@v3
         id: buildx
 
+        # uses default token right now
       - name: Docker Login
         uses: docker/login-action@v3
         with:
           registry: ${{ env.DOCKER_REGISTRY }}
-          username: ${{ secrets.GHCR_USER }}
-          password: ${{ secrets.GHCR_PWD }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
 
       - name: Prepare Image Dependencies
         if: ${{ matrix.module != 'infrastructure' }}