Add CI/CD rules

Author: bashkirtsevich

.github/workflows/docker-publish.yml

@@ -0,0 +1,19 @@
+name: Docker Image CI
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v1
+      - name: Docker login
+        run: docker login -u "${{ secrets.DOCKER_USER }}" -p "${{ secrets.DOCKER_PASSWORD }}"
+      - name: Build & push
+        env:
+          CONTAINER_IMAGE: ${{ secrets.DOCKER_USER }}/redis:alpine
+        run: |
+          docker build -t $CONTAINER_IMAGE .
+          docker push $CONTAINER_IMAGE