Create build_push_docker_hub.yml

.github/workflows/build_push_docker_hub.yml

@@ -0,0 +1,27 @@
+# Publish Docker image
+name: Publish Docker image on Docker Hub
+
+on:
+  push:
+    branches: 
+      - 'main'
+      - 'master'
+
+jobs:
+  push_to_docker_hub:
+    name: Push Docker image to Docker Hub
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+      - name: Login to DockerHub
+        uses: docker/login-action@v1 
+        with:
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_TOKEN }}
+      - name: Build and push Docker base
+        uses: docker/build-push-action@v2 # https://github.com/docker/build-push-action
+        with:
+          context: docker/docker_base
+          push: true
+          tags: ${{ secrets.DOCKER_HUB_REPOSITORY }}/docker_base:latest