ci(circleci-build): fix sample file

.circleci/config.yml

@@ -1,69 +1,26 @@
+# Use the latest 2.1 version of CircleCI pipeline process engine.
+# See: https://circleci.com/docs/2.0/configuration-reference
 version: 2.1
 
-executors:
-  docker_builder:
+# Define a job to be invoked later in a workflow.
+# See: https://circleci.com/docs/2.0/configuration-reference/#jobs
+jobs:
+  say-hello:
+    # Specify the execution environment. You can specify an image from Dockerhub or use one of our Convenience Images from CircleCI's Developer Hub.
+    # See: https://circleci.com/docs/2.0/configuration-reference/#docker-machine-macos-windows-executor
     docker:
-      - image: circleci/buildpack-deps:bionic
-        user: root
-
-references:
-  docker_parameters: &docker_parameters
-    DOCKERHUB_REPO:
-        type: string
-    APP_NAME: 
-        type: string
-    DOCKER_FILE:
-        type: string
-
-commands:
-  docker_build:
-    parameters: *docker_parameters
+      - image: cimg/base:stable
+    # Add steps to the job
+    # See: https://circleci.com/docs/2.0/configuration-reference/#steps
     steps:
       - checkout
-      - setup_remote_docker:
-          docker_layer_caching: true
       - run:
-          name: Build and push Docker image to DockerHub
-          command: |
-            docker login -u $DOCKER_USER -p $DOCKER_PASS
-            docker build -t << parameters.DOCKERHUB_REPO >>:${CIRCLE_TAG:-master} -f << parameters.DOCKER_FILE >> .
-            docker push << parameters.DOCKERHUB_REPO >>:${CIRCLE_TAG:-master}
-            
-jobs:          
-  docker_push_tag:
-    parameters: *docker_parameters
-    executor: docker_builder
-    steps:
-      - docker_build:
-          DOCKERHUB_REPO: << parameters.DOCKERHUB_REPO >>
-          APP_NAME: << parameters.APP_NAME >>
-          DOCKER_FILE: << parameters.DOCKER_FILE >>
+          name: "Say hello"
+          command: "echo Hello, World!"
 
+# Invoke jobs via workflows
+# See: https://circleci.com/docs/2.0/configuration-reference/#workflows
 workflows:
-  version: 2
-  build_push:
+  say-hello-workflow:
     jobs:
-      - docker_push_tag:
-          name: docker_push_tag_web
-          DOCKERHUB_REPO: "aeternity/superhero-ui" // what should be the same image or different tag ? 
-          APP_NAME: "aggregator"
-          DOCKER_FILE: nginx.Dockerfile
-          context: ae-dockerhub
-          filters:
-            branches:
-              only:
-                - features/circleci-config
-            tags:
-              only: /^v.*$/
-      - docker_push_tag:
-          name: docker_push_tag_ssr
-          DOCKERHUB_REPO: "aeternity/superhero-ui"
-          APP_NAME: ""
-          DOCKER_FILE: Dockerfile
-          context: ae-dockerhub
-          filters:
-            branches:
-              only:
-                - features/circleci-config
-            tags:
-              only: /^v.*$/
+      - say-hello