ci: build Docker image on GHA

.github/workflows/docker.yml

@@ -0,0 +1,17 @@
+name: Build Dockerfile
+
+on: push
+
+jobs:
+  build:
+    runs-on: ubuntu-22.04
+    steps:
+      # Checks-out the repository under $GITHUB_WORKSPACE.
+      - uses: actions/checkout@v3
+      - name: Build Dockerfile
+        run: docker build . -t plotly
+      - name: Run Docker image
+        run: |
+          CONTAINER_ID=$(docker run --rm -d -p 3000:3000 --net=host plotly)
+          curl -X POST -i 127.0.0.1:3000/ --data '{ "x": ["2013-10-04 22:23:00", "2013-11-04 22:23:00", "2013-12-04 22:23:00"], "y": [1, 3, 6], "type": "scatter" }'
+          docker stop -t 1 "$CONTAINER_ID"