try

.circleci/config.yml

@@ -1,31 +1,69 @@
 version: 2.1
 jobs:
-  build:
-    docker: &shared_docker
-      - image: circleci/node:12
+  Hello-World:
+    docker:
+      - image: alpine:3.7
+        auth:
+          username: mydockerhub-user
+          password: $DOCKERHUB_PASSWORD # context / project UI env-var reference
     steps:
-      - checkout # check out the code in the project directory
-      - restore_cache:
-          keys:
-            - npm-v1-dependencies-{{ checksum "yarn.lock" }}
-      - run: yarn global add node-gyp && yarn install
-      - save_cache:
-          key: npm-v1-dependencies-{{ checksum "yarn.lock" }}
-          paths:
-            - ./node_modules
-
-  job2:
-    docker: *shared_docker
+      - run:
+          name: Hello World
+          command: |
+            echo 'Hello World!'
+            echo 'This is the delivery pipeline'
+  I-Have-Code:
+    docker:
+      - image: alpine:3.7
+        auth:
+          username: mydockerhub-user
+          password: $DOCKERHUB_PASSWORD # context / project UI env-var reference
     steps:
       - checkout
-      - restore_cache:
-          keys:
-            - npm-v1-dependencies-{{ checksum "yarn.lock" }}
-      - run: echo Hello World !
+      - run:
+          name: Code Has Arrived
+          command: |
+            ls -al
+            echo '^^^That should look familiar^^^'
+  Run-With-Node:
+    docker:
+      - image: circleci/node:10-browsers
+        auth:
+          username: mydockerhub-user
+          password: $DOCKERHUB_PASSWORD # context / project UI env-var reference
+    steps:
+      - run:
+          name: Running In A Container With Node
+          command: |
+            node -v
+  Now-Complete:
+    docker:
+      - image: alpine:3.7
+        auth:
+          username: mydockerhub-user
+          password: $DOCKERHUB_PASSWORD # context / project UI env-var reference
+    steps:
+      - run:
+          name: Approval Complete
+          command: |
+            echo 'Do work once the approval has completed'
 
 workflows:
   version: 2
-  build_test:
+  Example_Workflow:
     jobs:
-      - build
-      - job2
+      - Hello-World
+      - I-Have-Code:
+          requires:
+            - Hello-World
+      - Run-With-Node:
+          requires:
+            - Hello-World
+      - Hold-For-Approval:
+          type: approval
+          requires:
+            - Run-With-Node
+            - I-Have-Code
+      - Now-Complete:
+          requires:
+            - Hold-For-Approval