add docker hub push

.circleci/config.yml

@@ -63,6 +63,40 @@ jobs:
           name: restore yarn package cache
           key: yarn-packages-v2{{ checksum "yarn.lock" }}
       - run: yarn test:e2e
+  build_image:
+        docker:
+            - image: circleci/buildpack-deps:stretch
+        steps:
+            - checkout
+            - setup_remote_docker
+            - run:
+                name: Build Docker image
+                command: docker build -t sukiadoramu/my-awesome-ci-expr:app .
+            - run:
+                name: Archive Docker image
+                command: docker save -o image.tar sukiadoramu/my-awesome-ci-expr
+            - persist_to_workspace:
+                root: .
+                paths:
+                    - ./image.tar
+    publish_latest:
+        docker:
+            - image: circleci/buildpack-deps:stretch       
+        steps:
+            - attach_workspace:
+                at: /tmp/workspace
+            - setup_remote_docker
+            - run:
+                name: Load archived Docker image
+                command: docker load -i /tmp/workspace/image.tar
+            - run:
+                name: Publish Docker Image to Docker Hub
+                command: |
+                    echo "$DOCKERHUB_PASS" | docker login -u sukiadoramu --password-stdin
+                    docker tag sukiadoramu/my-awesome-ci-expr:app sukiadoramu/my-awesome-ci-expr:$CIRCLE_BUILD_NUM
+                    docker tag sukiadoramu/my-awesome-ci-expr:app sukiadoramu/my-awesome-ci-expr:latest
+                    docker push sukiadoramu/my-awesome-ci-expr:latest
+                    docker push sukiadoramu/my-awesome-ci-expr:$CIRCLE_BUILD_NUM
 
 workflows:
   build_and_test:
@@ -77,3 +111,11 @@ workflows:
       - database:
           requires:
             - build
+      - build_image:
+            requires: 
+                - test
+                - database
+                - lint
+        - publish_latest:
+            requires: 
+                - build_image