Add Docker build and push steps

.drone.yml

@@ -1,8 +1,15 @@
 kind: pipeline
-name: build-and-deploy
+name: default
 
 steps:
   - name: build
+    image: docker
+    commands:
+      - docker build -t cdn-app-insider:latest .
+      - docker login -u $DOCKER_USERNAME -p $DOCKER_PASSWORD
+      - docker push cdn-app-insider:latest
+
+  - name: build-node
     image: node:latest
     environment:
       USERNAME: