feat(public repo)log in the 01-edu repository prior to executing the other actions

.github/workflows/docker-images.yml

@@ -20,6 +20,13 @@ jobs:
           username: ${{ github.actor }}
           password: ${{ secrets.GITHUB_TOKEN }}
 
+      - name: Login to docker.01-edu.org Registry
+        uses: docker/login-action@v1
+        with:
+          registry: docker.01-edu.org
+          username: ${{ secrets.USER_DOCKER_01EDU_ORG }}
+          password: ${{ secrets.SECRET_DOCKER_01EDU_ORG }}
+
       - name: Build the Sh Docker image
         run: |
           docker build sh/tests/ --file sh/tests/Dockerfile --tag ghcr.io/01-edu/test-sh:latest