changed env vars for secrets

Author: rootware

.github/workflows/cd.yml

@@ -31,8 +31,8 @@ jobs:
       - name: Login to DockerHub
         uses: docker/login-action@v2
         with:
-          username: ${{ secrets.DOCKERHUB_USERNAME }}
-          password: ${{ secrets.DOCKERHUB_PASSWORD }}
+          username: ${{ secrets.DOCKER_USERNAME }}
+          password: ${{ secrets.DOCKER_PASSWORD }}
 
       - name: Build and push to DockerHub
         uses: docker/build-push-action@v3