Setup circleci config

.circleci/config.yml

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+# This configuration will automatically create docker images based on conventions
+# For example, if a tag BitcoinCore/0.17.0 is pushed
+# Then on docker hub "btcpayserver/BitcoinCore" will be pushed:
+# - 0.17.0-arm32v7 from BitcoinCore/0.17.0/linuxarm32v7.Dockerfile
+# - 0.17.0-amd64 from BitcoinCore/0.17.0/linuxamd64.Dockerfile
+# - 0.17.0 multi arch image
+version: 2
+jobs:
+  build:
+    machine: 
+      docker_layer_caching: true
+    steps: 
+      - checkout
+
+  # publish jobs require $DOCKERHUB_USER, $DOCKERHUB_PASS defined
+  publish_linuxamd64:
+    machine:
+      docker_layer_caching: true
+    steps:
+      - checkout  
+      - run:
+          command: |
+            # If CIRCLE_TAG is "BitcoinCore/0.17.0"
+            # Then:
+            # $SEPARATOR=12
+            # $NODE_NAME=BitcoinCore
+            # $NODE_VERSION=0.17.0
+            # $LATEST_TAG=0.17.0
+            SEPARATOR=$(expr index "$CIRCLE_TAG" "/")
+            NODE_NAME=${CIRCLE_TAG:0:$SEPARATOR-1}
+            LATEST_TAG="${CIRCLE_TAG:$SEPARATOR}"
+            NODE_VERSION="$LATEST_TAG"
+            DOCKERHUB_REPO="btcpayserver/$NODE_NAME"
+            DOCKERHUB_REPO="${DOCKERHUB_REPO,,}"
+            DOCKERHUB_DESTINATION="$DOCKERHUB_REPO:$LATEST_TAG-amd64"
+            DOCKERHUB_DOCKEFILE="$NODE_NAME/$NODE_VERSION/linuxamd64.Dockerfile"
+            #
+            echo "Pushing $DOCKERHUB_DOCKEFILE to dockerhub repository $DOCKERHUB_DESTINATION"
+            sudo docker login --username=$DOCKERHUB_USER --password=$DOCKERHUB_PASS
+            sudo docker build --pull -t $DOCKERHUB_DESTINATION -f "$DOCKERHUB_DOCKEFILE" "$NODE_NAME/$NODE_VERSION"
+            sudo docker push $DOCKERHUB_DESTINATION
+
+  publish_linuxarm32v7:
+    machine:
+      docker_layer_caching: true
+    steps:
+      - checkout  
+      - run:
+          command: |
+            sudo docker run --rm --privileged multiarch/qemu-user-static:register --reset
+            sudo apt update
+            sudo apt install -y qemu qemu-user-static qemu-user binfmt-support
+            sudo cp /usr/bin/qemu-arm-static qemu-arm-static
+            # If CIRCLE_TAG is "BitcoinCore/0.17.0"
+            # Then:
+            # $SEPARATOR=12
+            # $NODE_NAME=BitcoinCore
+            # $NODE_VERSION=0.17.0
+            # $LATEST_TAG=0.17.0
+            SEPARATOR=$(expr index "$CIRCLE_TAG" "/")
+            NODE_NAME=${CIRCLE_TAG:0:$SEPARATOR-1}
+            LATEST_TAG="${CIRCLE_TAG:$SEPARATOR}"
+            NODE_VERSION="$LATEST_TAG"
+            DOCKERHUB_REPO="btcpayserver/$NODE_NAME"
+            DOCKERHUB_REPO="${DOCKERHUB_REPO,,}"
+            DOCKERHUB_DESTINATION="$DOCKERHUB_REPO:$LATEST_TAG-arm32v7"
+            DOCKERHUB_DOCKEFILE="$NODE_NAME/$NODE_VERSION/linuxarm32v7.Dockerfile"
+            #
+            # Make sure the builder is copy the arm emulator
+            sed -i -e 's/#EnableQEMU //g' "$DOCKERHUB_DOCKEFILE"
+            #
+            echo "Pushing $DOCKERHUB_DOCKEFILE to dockerhub repository $DOCKERHUB_DESTINATION"
+            sudo docker login --username=$DOCKERHUB_USER --password=$DOCKERHUB_PASS
+            sudo docker build --pull -t $DOCKERHUB_DESTINATION -f "$DOCKERHUB_DOCKEFILE" "$NODE_NAME/$NODE_VERSION"
+            sudo docker push $DOCKERHUB_DESTINATION
+
+  publish_multiarch:
+    machine:
+      enabled: true
+      image: circleci/classic:201808-01
+    steps:
+      - run:
+          command: |
+            # Turn on Experimental features
+            sudo mkdir $HOME/.docker
+            sudo sh -c 'echo "{ \"experimental\": \"enabled\" }" >> $HOME/.docker/config.json'
+            # If CIRCLE_TAG is "BitcoinCore/0.17.0"
+            # Then:
+            # $SEPARATOR=12
+            # $NODE_NAME=BitcoinCore
+            # $NODE_VERSION=0.17.0
+            # $LATEST_TAG=0.17.0
+            SEPARATOR=$(expr index "$CIRCLE_TAG" "/")
+            NODE_NAME=${CIRCLE_TAG:0:$SEPARATOR-1}
+            LATEST_TAG="${CIRCLE_TAG:$SEPARATOR}"
+            NODE_VERSION="$LATEST_TAG"
+            DOCKERHUB_REPO="btcpayserver/$NODE_NAME"
+            DOCKERHUB_REPO="${DOCKERHUB_REPO,,}"
+            DOCKERHUB_DESTINATION="$DOCKERHUB_REPO:$LATEST_TAG"
+            #
+            sudo docker login --username=$DOCKERHUB_USER --password=$DOCKERHUB_PASS
+            sudo docker manifest create --amend $DOCKERHUB_DESTINATION $DOCKERHUB_DESTINATION-amd64 $DOCKERHUB_DESTINATION-arm32v7
+            sudo docker manifest annotate $DOCKERHUB_DESTINATION $DOCKERHUB_DESTINATION-amd64 --os linux --arch amd64
+            sudo docker manifest annotate $DOCKERHUB_DESTINATION $DOCKERHUB_DESTINATION-arm32v7 --os linux --arch arm --variant v7
+            sudo docker manifest push $DOCKERHUB_DESTINATION -p
+
+workflows:
+  version: 2
+  publish:
+    jobs:
+      - publish_linuxamd64:
+          filters:
+            branches:
+              ignore: /.*/
+            # Example: BitcoinCore/0.17.0
+            tags:
+              only: /^[^/]+[/][0-9]+(\.[0-9]+)*/
+      - publish_linuxarm32v7:
+          filters:
+            branches:
+              ignore: /.*/
+            tags:
+              # Example: BitcoinCore/0.17.0
+              only: /^[^/]+[/][0-9]+(\.[0-9]+)*/
+      - publish_multiarch:
+          requires:
+            - publish_linuxamd64
+            - publish_linuxarm32v7
+          filters:
+            branches:
+              ignore: /.*/
+            tags:
+              # Example: BitcoinCore/0.17.0
+              only: /^[^/]+[/][0-9]+(\.[0-9]+)*/