Add windows server dockerfile

Author: Ryler Hockenbury

.circleci/build_and_push.sh

@@ -1,10 +1,10 @@
 #!/usr/bin/env bash
 set -e
 aws ecr get-login --region $AWS_REGION --no-include-email | bash
-echo "Building docker image..."
-cp /tmp/pkg/fluent-plugin-splunk-hec-*.gem docker
-docker build --no-cache -t splunk/fluent-plugin-splunk-hec:ci ./docker
+echo "Building linux docker image..."
+cp /tmp/pkg/fluent-plugin-splunk-hec-*.gem docker/linux
+docker build --no-cache -t splunk/fluent-plugin-splunk-hec:ci ./docker/linux
 docker tag splunk/fluent-plugin-splunk-hec:ci $AWS_ACCOUNT_ID.dkr.ecr.$AWS_REGION.amazonaws.com/k8s-ci-logging:latest
 echo "Push docker image to ecr..."
 docker push $AWS_ACCOUNT_ID.dkr.ecr.$AWS_REGION.amazonaws.com/k8s-ci-logging:latest | awk 'END{print}'
-echo "Docker image pushed successfully."
+echo "Docker image pushed successfully."

.circleci/build_and_push_to_dockerhub.sh

@@ -1,11 +1,11 @@
 #!/usr/bin/env bash
 set -e
-echo "Building docker image..."
-cp /tmp/pkg/fluent-plugin-splunk-hec-*.gem docker
+echo "Building linux docker image..."
+cp /tmp/pkg/fluent-plugin-splunk-hec-*.gem docker/linux
 VERSION=`cat VERSION`
-docker build --build-arg VERSION=$VERSION --no-cache -t splunk/fluent-plugin-splunk-hec:ci ./docker
+docker build --build-arg VERSION=$VERSION --no-cache -t splunk/fluent-plugin-splunk-hec:ci ./docker/linux
 docker tag splunk/fluent-plugin-splunk-hec:ci splunk/${DOCKERHUB_REPO_NAME}:${VERSION}
 echo "Push docker image to splunk dockerhub..."
 docker login --username=$DOCKERHUB_ACCOUNT_ID --password=$DOCKERHUB_ACCOUNT_PASS
 docker push splunk/${DOCKERHUB_REPO_NAME}:${VERSION} | awk 'END{print}'
-echo "Docker image pushed successfully to docker-hub."
+echo "Docker image pushed successfully to docker-hub."

docker/Dockerfile renamed to docker/linux/Dockerfile

@@ -0,0 +1,40 @@
+FROM mcr.microsoft.com/windows/servercore:ltsc2019
+
+LABEL maintainer="Splunk Inc. <[email protected]>"
+
+# skip runtime bundler installation
+ENV FLUENTD_DISABLE_BUNDLER_INJECTION 1
+COPY *.gem /tmp/
+
+RUN powershell -Command \
+  Set-ExecutionPolicy Bypass -Scope Process -Force; \
+  iex ((New-Object System.Net.WebClient).DownloadString('https://chocolatey.org/install.ps1'))
+
+RUN choco install -y ruby --version 2.4.2.2 --params "'/InstallDir:C:\'" \
+  && choco install -y msys2 --params "'/NoPath /NoUpdate /InstallDir:C:\ruby24\msys64'" \
+  && refreshenv \
+  && ridk install 2 3
+
+RUN echo gem: --no-document >> C:\ProgramData\gemrc \
+  && gem install -N fluentd -v "1.4.0" \
+  && gem install -N fluent-plugin-windows-eventlog -v "0.3.0" \
+  && gem install -N fluent-plugin-concat -v "2.2.2" \
+  && gem install -N fluent-plugin-prometheus -v "1.3.0" \
+  && gem install -N oj -v "3.5.1" \
+  && gem install -N /tmp/*.gem \
+  && gem sources --clear-all \
+  && mkdir C:\fluentd\etc
+
+# plugin hardfails when using net-http-persistent 3.0.1 on windows
+# https://github.com/drbrain/net-http-persistent/issues/79#issuecomment-347541046
+# make an inline replacement to net-http-persistent to resolve
+RUN powershell -Command " \
+$file = 'C:\ruby24\lib\ruby\gems\2.4.0\gems\net-http-persistent-3.0.1\lib\net\http\persistent.rb'; \
+$content = (Get-Content -Path $file).Replace(\"  DEFAULT_POOL_SIZE = Process.getrlimit(Process::RLIMIT_NOFILE).first / 4\", \"  if Gem.win_platform? then`n    DEFAULT_POOL_SIZE = 256`n  else`n    DEFAULT_POOL_SIZE = Process.getrlimit(Process::RLIMIT_NOFILE).first / 4`n  end\"); \
+Set-Content -Path $file $content;"
+
+# Remove gem cache
+RUN powershell -Command del C:\ruby24\lib\ruby\gems\2.4.0\cache\*.gem;
+
+ENTRYPOINT ["cmd", "/k", "fluentd"]
+CMD ["-h"]