chg: Do not push docker image to docker hub

Use package from github instead.

.github/workflows/dockerimage.yml

@@ -1,20 +0,0 @@
-name: Push to docker hub
-
-on: [push]
-
-jobs:
-
-  push_to_registry:
-    name: Push Docker image to Docker Hub
-    runs-on: ubuntu-latest
-    steps:
-      - name: Checkout code
-        uses: actions/checkout@v2
-
-      - name: Build and push Docker images
-        uses: docker/build-push-action@v2
-        with:
-          username: ${{ secrets.DOCKER_USERNAME }}
-          password: ${{ secrets.DOCKER_PASSWORD }}
-          repository: lookyloo/lookyloo
-          tags: latest