将 scala 应用程序部署为 docker 容器

Question

我正在尝试将这个很棒的 Scala 应用程序部署为 Docker 容器。 https://github.com/OlegIlyenko/graphql-toolbox

它使用 sbt 构建系统。 我尝试使用此 Dockerfile 在容器中运行 sbt。 https://gist.github.com/rzachariah/77eb927f650347ef06d0009dc220cd4a

容器构建并启动，但随后立即退出。

我猜sbt run是一个交互式进程——而不是一个守护进程。 在容器中sbt run可能是个坏主意。

我开始研究 sbt-assembly 来创建一个我可以执行的胖 jar。 https://github.com/sbt/sbt-assembly

我在执行sbt assembly时遇到一些错误。

C:\\Users\\rzachariah\\.ivy2\\cache\\commons-logging\\commons-logging\\jars\\commons-logging-1.1.1.jar:org/apache/commons/logging/impl/SimpleLog.class at sbtassembly.Assembly$.applyStrategies(Assembly.scala:140) at sbtassembly.Assembly$.x$1$lzycompute$1(Assembly.scala:25) at sbtassembly.Assembly$.x$1$1(Assembly.scala:23) at sbtassembly.Assembly$.stratMapping$lzycompute$1(Assembly.scala:23) at sbtassembly.Assembly$.stratMapping$1(Assembly.scala:23) at sbtassembly.Assembly$.inputs$lzycompute$1(Assembly.scala:67) at sbtassembly.Assembly$.inputs$1(Assembly.scala:57) at sbtassembly.Assembly$.apply(Assembly.scala:83) at sbtassembly.Assembly$$anonfun$assemblyTask$1.apply(Assembly.scala:240) at sbtassembly.Assembly$$anonfun$assemblyTask$1.apply(Assembly.scala:237) at scala.Function1$$anonfun$compose$1.apply(Function1.scala:47) at sbt.$tilde$greater$$anonfun$$u2219$1.apply(TypeFunctions.scala:40) at sbt.std.Transform$$anon$4.work(System.scala:63) at sbt.Execute$$anonfun$submit$1$$anonfun$apply$1.apply(Execute.scala:228) at sbt.Execute$$anonfun$submit$1$$anonfun$apply$1.apply(Execute.scala:228) at sbt.ErrorHandling$.wideConvert(ErrorHandling.scala:17) at sbt.Execute.work(Execute.scala:237) at sbt.Execute$$anonfun$submit$1.apply(Execute.scala:228) at sbt.Execute$$anonfun$submit$1.apply(Execute.scala:228) at sbt.ConcurrentRestrictions$$anon$4$$anonfun$1.apply(ConcurrentRestrictions.scala:159) at sbt.CompletionService$$anon$2.call(CompletionService.scala:28) at java.util.concurrent.FutureTask.run(Unknown Source) at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) at java.util.concurrent.FutureTask.run(Unknown Source) at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) at java.lang.Thread.run(Unknown Source) [error] (*:assembly) deduplicate: different file contents found in the following: [error] C:\\Users\\rzachariah\\.ivy2\\cache\\io.netty\\netty-handler\\jars\\netty-handler-4.0.36.Final.jar:META-INF/io.netty.versions.properties [error] C:\\Users\\rzachariah\\.ivy2\\cache\\io.netty\\netty-buffer\\jars\\netty-buffer-4.0.36.Final.jar:META-INF/io.netty.versions.properties [error] C:\\Users\\rzachariah\\.ivy2\\cache\\io.netty\\netty-common\\jars\\netty-common-4.0.36.Final.jar:META-INF/io.netty.versions.properties [error] C:\\Users\\rzachariah\\.ivy2\\cache\\io.netty\\netty-transport\\jars\\netty-transport-4.0.36.Final.jar:META-INF/io.netty.versions.properties [error] C:\\Users\\rzachariah\\.ivy2\\cache\\io.netty\\netty-codec\\jars\\netty-codec-4.0.36.Final.jar:META-INF/io.netty.versions.properties [error] C:\\Users\\rzachariah\\.ivy2\\cache\\io.netty\\netty-codec-http\\jars\\netty-codec-http-4.0.36.Final.jar:META-INF/io.netty.versions.properties [error] C:\\Users\\rzachariah\\.ivy2\\cache\\io.netty\\netty-transport-native-epoll\\jars\\netty-transport-native-epoll-4.0.36.Final-linux-x86_64.jar:META-INF/io.netty.versions.properties [error] deduplicate: different file contents found in the following: [error] C:\\Users\\rzachariah\\.ivy2\\cache\\org.slf4j\\jcl-over-slf4j\\jars\\jcl-over-slf4j-1.7.19.jar:org/apache/commons/logging/Log.class [error] C:\\Users\\rzachariah\\.ivy2\\cache\\commons-logging\\commons-logging\\jars\\commons-logging-1.1.1.jar:org/apache/commons/logging/Log.class [error] deduplicate: different file contents found in the following: [error] C:\\Users\\rzachariah\\.ivy2\\cache\\org.slf4j\\jcl-over-slf4j\\jars\\jcl-over-slf4j-1.7.19.jar:org/apache/commons/logging/LogConfigurationException.class [error] C:\\Users\\rzachariah\\.ivy2\\cache\\commons-logging\\commons-logging\\jars\\commons-logging-1.1.1.jar:org/apache/commons/logging/LogConfigurationException.class [error] deduplicate: different file contents found in the following: [error] C:\\Users\\rzachariah\\.ivy2\\cache\\org.slf4j\\jcl-over-slf4j\\jars\\jcl-over-slf4j-1.7.19.jar:org/apache/commons/logging/LogFactory.class [error] C:\\Users\\rzachariah\\.ivy2\\cache\\commons-logging\\commons-logging\\jars\\commons-logging-1.1.1.jar:org/apache/commons/logging/LogFactory.class [error] deduplicate: different file contents found in the following: [error] C:\\Users\\rzachariah\\.ivy2\\cache\\org.slf4j\\jcl-over-slf4j\\jars\\jcl-over-slf4j-1.7.19.jar:org/apache/commons/logging/impl/NoOpLog.class [error] C:\\Users\\rzachariah\\.ivy2\\cache\\commons-logging\\commons-logging\\jars\\commons-logging-1.1.1.jar:org/apache/commons/logging/impl/NoOpLog.class [error] deduplicate: different file contents found in the following: [error] C:\\Users\\rzachariah\\.ivy2\\cache\\org.slf4j\\jcl-over-slf4j\\jars\\jcl-over-slf4j-1.7.19.jar:org/apache/commons/logging/impl/SimpleLog$1.class [error] C:\\Users\\rzachariah\\.ivy2\\cache\\commons-logging\\commons-logging\\jars\\commons-logging-1.1.1.jar:org/apache/commons/logging/impl/SimpleLog$1.class [error] deduplicate: different file contents found in the following: [error] C:\\Users\\rzachariah\\.ivy2\\cache\\org.slf4j\\jcl-over-slf4j\\jars\\jcl-over-slf4j-1.7.19.jar:org/apache/commons/logging/impl/SimpleLog.class [error] C:\\Users\\rzachariah\\.ivy2\\cache\\commons-logging\\commons-logging\\jars\\commons-logging-1.1.1.jar:org/apache/commons/logging/impl/SimpleLog.class [error] Total time: 5 s, completed Oct 10, 2016 6:41:44 PM

我想我需要定义一个合并策略，但我对如何做到这一点有点困惑。 任何指针？ 我是一个完全的 Scala 新手。

Answer 1

我了解到，由于我的 scala 应用程序使用 play 框架，并且内置了原生打包器，因此将我的应用程序打包到容器中非常容易！

sbt docker:publishLocal

http://www.scala-sbt.org/sbt-native-packager/formats/docker.html