add ci yml

github/workflows/ci.yml

@@ -0,0 +1,39 @@
+name: CI
+
+# Controls when the action will run. 
+on: pull_request
+
+  # Allows you to run this workflow manually from the Actions tab
+  workflow_dispatch:
+
+# A workflow run is made up of one or more jobs that can run sequentially or in parallel
+jobs:
+  docker:
+    runs-on: ubuntu-20.04
+    steps:
+
+      - name: Check Out Repo 
+        uses: actions/checkout@v2
+
+      - name: Login to Docker Hub
+        uses: docker/login-action@v1
+        with:
+          username: ${{ secrets.DOCKER_HUB_USERNAME }}
+          password: ${{ secrets.DOCKER_HUB_ACCESS_TOKEN }}
+
+      - name: Set up Docker Buildx
+        id: buildx
+        uses: docker/setup-buildx-action@v1
+
+      - name: Build and push
+        id: docker_build
+        uses: docker/build-push-action@v2
+        with:
+          context: ./
+          file: ./Dockerfile
+          push: false
+          tags: ${{ secrets.DOCKER_HUB_USERNAME }}/sphinxsys:production
+
+      - name: Image digest
+        run: echo ${{ steps.docker_build.outputs.digest }}
+