removes docker-build

.github/workflows/docker-image.yml

@@ -1,27 +0,0 @@
-name: Docker Image CI
-
-on:
-  push:
-    branches:
-    - master
-  pull_request:
-    branches:
-    - master
-  # Allows you to run this workflow manually from the Actions tab
-  workflow_dispatch:
-  schedule:
-  - cron: "0 4 * * 0-6"
-
-jobs:
-
-  build:
-
-    runs-on: ubuntu-latest
-
-    steps:
-    - uses: actions/checkout@v2
-      with:
-        submodules: 'recursive'
-    - name: Build the Docker image
-      run: docker build . --file Dockerfile --tag goryn-pathfinder:$(date +%s)
-