Separate username from image repo

Author: bausmeier

.github/workflows/publish-docker.yml

@@ -20,12 +20,12 @@ jobs:
         id: meta
         uses: docker/metadata-action@v5
         with:
-          images: ${{ vars.DOCKER_USERNAME }}/population-app
+          images: decodedev/population-app
 
       - name: Log in to Docker Hub
         uses: docker/login-action@v3
         with:
-          username: ${{ vars.DOCKER_USERNAME }}
+          username: ${{ secrets.DOCKER_USERNAME }}
           password: ${{ secrets.DOCKER_TOKEN }}
 
       - name: Set up Docker Buildx