Update build-docker.yaml

Dockerhub_token added

Author: SilasCloud

.github/workflows/build-docker.yaml

@@ -15,4 +15,6 @@ jobs:
         run: docker build ./api/ -t echelonkay/devops-qr-code-api:latest
 
       - name: push image to docker hub
-        run: docker push echelonkay/devops-qr-code-api:latest
+        run: |
+        docker login -u echelonkay -p ${{ secrets.DOCKER_HUB_TOKEN }}
+        docker push echelonkay/devops-qr-code-api:latest