CircleCI multiarch Docker images (#416)

* Preparing final version of CircleCI docker building

* Removing test job requirement for building Docker images

We'll already monitor build before tagging, would be too many checks

* Adding pushing of manifest for tag

* Easy access to docker/circle config files for edit

* Generalizing script with $DOCKERHUB_REPO variable

.circleci/config.yml

@@ -5,6 +5,7 @@ jobs:
       docker_layer_caching: true
     steps: 
       - checkout
+
   test:
     machine: true
     steps:
@@ -23,8 +24,91 @@ jobs:
             dotnet test --filter Fast=Fast
             docker-compose up -d dev
             dotnet test --filter Integration=Integration
+
+  # publish jobs require $DOCKERHUB_REPO, $DOCKERHUB_USER, $DOCKERHUB_PASS defined
+  publish_docker_linuxamd64:
+    machine:
+      docker_layer_caching: true
+    steps:
+      - checkout  
+      - run:
+          command: |
+            LATEST_TAG=${CIRCLE_TAG:1} #trim v from tag
+            #
+            sudo docker build --pull -t $DOCKERHUB_REPO:$LATEST_TAG-amd64 -t $DOCKERHUB_REPO:latest-amd64 -f Dockerfile.linuxamd64 .
+            sudo docker login --username=$DOCKERHUB_USER --password=$DOCKERHUB_PASS
+            sudo docker push $DOCKERHUB_REPO:$LATEST_TAG-amd64
+            sudo docker push $DOCKERHUB_REPO:latest-amd64
+
+  publish_docker_linuxarm:
+    machine:
+      docker_layer_caching: true
+    steps:
+      - checkout  
+      - run:
+          command: |
+            sudo apt update
+            sudo apt install -y qemu qemu-user-static qemu-user binfmt-support
+            sudo docker run --rm --privileged multiarch/qemu-user-static:register --reset
+            LATEST_TAG=${CIRCLE_TAG:1} #trim v from tag
+            #
+            sudo docker build --pull -t $DOCKERHUB_REPO:$LATEST_TAG-arm32v7 -t $DOCKERHUB_REPO:latest-arm32v7 -f Dockerfile.linuxarm32v7 .
+            sudo docker login --username=$DOCKERHUB_USER --password=$DOCKERHUB_PASS
+            sudo docker push $DOCKERHUB_REPO:$LATEST_TAG-arm32v7
+            sudo docker push $DOCKERHUB_REPO:latest-arm32v7
+
+  publish_docker_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\" }" >> $HOME/.docker/config.json'
+            #
+            sudo docker login --username=$DOCKERHUB_USER --password=$DOCKERHUB_PASS
+            #
+            sudo docker manifest create --amend $DOCKERHUB_REPO:latest $DOCKERHUB_REPO:latest-amd64 $DOCKERHUB_REPO:latest-arm32v7
+            sudo docker manifest annotate $DOCKERHUB_REPO:latest $DOCKERHUB_REPO:latest-amd64 --os linux --arch amd64
+            sudo docker manifest annotate $DOCKERHUB_REPO:latest $DOCKERHUB_REPO:latest-arm32v7 --os linux --arch arm --variant v7
+            sudo docker manifest push $DOCKERHUB_REPO:latest -p
+            #
+            LATEST_TAG=${CIRCLE_TAG:1} #trim v from tag
+            sudo docker manifest create --amend $DOCKERHUB_REPO:$LATEST_TAG $DOCKERHUB_REPO:$LATEST_TAG-amd64 $DOCKERHUB_REPO:$LATEST_TAG-arm32v7
+            sudo docker manifest annotate $DOCKERHUB_REPO:$LATEST_TAG $DOCKERHUB_REPO:$LATEST_TAG-amd64 --os linux --arch amd64
+            sudo docker manifest annotate $DOCKERHUB_REPO:$LATEST_TAG $DOCKERHUB_REPO:$LATEST_TAG-arm32v7 --os linux --arch arm --variant v7
+            sudo docker manifest push $DOCKERHUB_REPO:$LATEST_TAG -p
+
 workflows:
   version: 2
   build_and_test:
     jobs:
       - test
+
+  publish:
+    jobs:
+      - publish_docker_linuxamd64:
+          filters:
+            # ignore any commit on any branch by default
+            branches:
+              ignore: /.*/
+            # only act on version tags
+            tags:
+              only: /v[1-9]+(\.[0-9]+)*/
+      - publish_docker_linuxarm:
+          filters:
+            branches:
+              ignore: /.*/
+            tags:
+              only: /v[1-9]+(\.[0-9]+)*/
+      - publish_docker_multiarch:
+          requires:
+            - publish_docker_linuxamd64
+            - publish_docker_linuxarm
+          filters:
+            branches:
+              ignore: /.*/
+            tags:
+              only: /v[1-9]+(\.[0-9]+)*/

Dockerfile.linuxarm32v7

@@ -0,0 +1,26 @@
+FROM microsoft/dotnet:2.1-sdk AS builder
+RUN dotnet --info
+WORKDIR /source
+COPY BTCPayServer/BTCPayServer.csproj BTCPayServer.csproj
+# Cache some dependencies
+RUN dotnet restore -r linux-arm
+
+COPY BTCPayServer/. .
+RUN dotnet publish -c Release -r linux-arm -o /app/ /p:ShowLinkerSizeComparison=true
+
+
+## runtime
+FROM microsoft/dotnet:2.1-aspnetcore-runtime-bionic-arm32v7 AS runtime
+
+ENV DOTNET_SYSTEM_GLOBALIZATION_INVARIANT false
+
+ENV LC_ALL en_US.UTF-8
+ENV LANG en_US.UTF-8
+
+WORKDIR /datadir
+WORKDIR /app
+ENV BTCPAY_DATADIR=/datadir
+VOLUME /datadir
+
+COPY --from=builder "/app" .
+ENTRYPOINT ["dotnet", "BTCPayServer.dll"]

btcpayserver.sln

@@ -7,6 +7,13 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "BTCPayServer", "BTCPayServe
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "BTCPayServer.Tests", "BTCPayServer.Tests\BTCPayServer.Tests.csproj", "{B373F439-6E75-4A94-985D-10A0C7C500D0}"
 EndProject
+Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Misc", "Misc", "{29290EC7-00E6-4C4B-96D9-4D7E9611DF28}"
+	ProjectSection(SolutionItems) = preProject
+		.circleci\config.yml = .circleci\config.yml
+		Dockerfile.linuxamd64 = Dockerfile.linuxamd64
+		Dockerfile.linuxarm32v7 = Dockerfile.linuxarm32v7
+	EndProjectSection
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU