Try a first config

.circleci/config.yml

@@ -0,0 +1,47 @@
+version: 2
+jobs:
+  build:
+    docker:
+      - image:17.07.0-ce-git
+    steps:
+      - checkout
+      - setup_remote_docker:
+          docker_layer_caching: true
+      - run: 
+          command:
+            docker build -t adferrand/backuppc:${CIRCLE_TAG} .
+      - run:
+          command:
+            docker save adferrand/backuppc:${CIRCLE_TAG} > docker-backuppc.tar
+      - persist_to_workspace:
+          paths:
+            - docker-backuppc.tar
+  deploy:
+    steps:
+      - attach_workspace:
+          at: /tmp/workspace
+      - setup_remote_docker:
+          docker_layer_caching: true
+      - run:
+          command:
+            docker load < /tmp/workspace/docker-backuppc.tar
+      - run: 
+          command:
+            docker login -u ${DOCKER_USER} -p ${DOCKER_PASS}
+      - deploy: 
+          command:
+            docker push adferrand/backuppc:${CIRCLE_TAG}
+workflows:
+  version: 2
+  build-n-deploy:
+    jobs:
+      - build:
+          filters:
+            branches:
+              only: ^circleci$
+      - deploy:
+          requires: 
+            - build
+          filters:
+            branches:
+              only: ^circleci$