为什么sbt-native-packager将bin / start作为目录而不是脚本？
我正在使用sbt-native-packager和sbt-docker来生成本教程中描述的Docker镜像。 Docker镜像不会运行（权限被拒绝），检查结果是bin/start被创build为一个空目录。
dan@cobalt:~/projects/confabulous/deva$ ls -l target/universal/stage/bin/ total 24 -rwxrw-r-- 1 dan dan 11591 Aug 5 20:44 deva -rw-rw-r-- 1 dan dan 6211 Aug 5 20:44 deva.bat drwxrwxr-x 2 dan dan 4096 Dec 31 1969 start
由于某种原因，它也有一个空的时间戳。 为什么它被创build为一个目录而不是一个shell脚本？
这是我的plugins.sbt：
addSbtPlugin("com.timushev.sbt" % "sbt-updates" % "0.1.4") addSbtPlugin("com.typesafe.sbt" % "sbt-native-packager" % "0.7.4") addSbtPlugin("io.spray" % "sbt-revolver" % "0.7.1") addSbtPlugin("se.marcuslonnberg" % "sbt-docker" % "0.5.0") resolvers += Classpaths.sbtPluginReleases
这里是我的build.sbt：
import DockerKeys._ import sbtdocker.{Dockerfile, ImageName} import com.typesafe.sbt.packager.Keys._ organization := "com.confabulous" name := "deva" version := "0.0.1" scalaVersion := "2.10.3" scalacOptions := Seq("-unchecked", "-deprecation", "-encoding", "utf8", "-language:postfixOps") resolvers ++= Seq( "sonatype releases" at "https://oss.sonatype.org/content/repositories/releases/", "sonatype snapshots" at "https://oss.sonatype.org/content/repositories/snapshots/", "typesafe repo" at "http://repo.typesafe.com/typesafe/releases/" ) libraryDependencies ++= Seq( "ch.qos.logback" % "logback-classic" % "1.0.9", "com.typesafe.akka" % "akka-slf4j_2.10" % "2.3.3", "com.typesafe.akka" %% "akka-actor" % "2.3.3", "com.typesafe.akka" %% "akka-remote" % "2.3.3", "com.typesafe.akka" %% "akka-agent" % "2.3.3", "com.typesafe.slick" %% "slick" % "2.0.1-RC1", "org.mozilla" % "rhino" % "1.7R4", "org.postgresql" % "postgresql" % "9.3-1101-jdbc3", "org.msgpack" %% "msgpack-scala" % "0.6.8", "com.livestream" %% "scredis" % "1.1.2", "com.confabulous" %% "messages" % "0.0.1-SNAPSHOT", "com.confabulous" %% "db" % "0.0.1-SNAPSHOT" ) packageArchetype.java_server sbtdocker.Plugin.dockerSettings mappings in Universal += baseDirectory.value / "docker" / "start" -> "bin/start" docker <<= docker.dependsOn(com.typesafe.sbt.packager.universal.Keys.stage.in(Compile)) // Define a Dockerfile dockerfile in docker <<= (name, stagingDirectory in Universal) map { case (appName, stageDir) => val workingDir = s"/opt/${appName}" new Dockerfile { // Use a base image that contain Java from("relateiq/oracle-java7") maintainer("Dan Ellis <dan@halftreelabs.com>") expose(1600) add(stageDir, workingDir) run("chmod", "+x", s"/opt/${appName}/bin/${appName}") run("chmod", "+x", s"/opt/${appName}/bin/start") workDir(workingDir) entryPointShell(s"bin/start", appName, "$@") } } imageName in docker := { ImageName( namespace = Some("confabulous.com"), repository = name.value //,tag = Some("v" + version.value)) ) }
引用的文章是一系列的第2部分，其中容器的地址通过脚本被传递到Java程序中。 脚本本身在第1部分中被引用。
mappings in Universal需要一系列(File, String)元组。 文件被复制到由生成的图像中的string指定的path。
在这种情况下，如果baseDirectory.value / "docker" / "start"没有文件，则没有任何文件可用于复制，结果就是您描述的行为。
您应该创build一个适当的启动脚本，如第1部分所述。
另一个select是在sbt-native-packager中使用对Docker的实验支持。
如果您从build.sbt中删除Docker相关的行，并添加一个maintainer设置，您可以：
sbt docker:stage在target/docker/stage docker target/docker/stage sbt docker:stage生成一个Dockerfile和上下文
sbt docker:publishLocal生成本地图片
sbt docker:publish生成图像并远程推送
如果要修改传递给启动脚本的命令，可以进行如下修改：
bashScriptExtraDefines := Seq( "CLUSTER_IP=$(/sbin/ifconfig eth0 | grep 'inet addr:' | cut -d: -f2 | awk '{ print $1}')", "addResidual ${CLUSTER_IP}" )
addResidual是由sbt-native-packager生成的启动脚本中的一个函数，它为程序的命令行参数添加了一个额外的参数。
addJava是一个为运行程序的Java二进制文件添加额外参数的函数。
您的build.sbt可能如下所示：
import com.typesafe.sbt.packager.Keys._ organization := "com.confabulous" name := "deva" version := "0.0.1" scalaVersion := "2.10.3" scalacOptions := Seq("-unchecked", "-deprecation", "-encoding", "utf8", "-language:postfixOps") resolvers ++= Seq( "sonatype releases" at "https://oss.sonatype.org/content/repositories/releases/", "sonatype snapshots" at "https://oss.sonatype.org/content/repositories/snapshots/", "typesafe repo" at "http://repo.typesafe.com/typesafe/releases/" ) libraryDependencies ++= Seq( "ch.qos.logback" % "logback-classic" % "1.0.9", "com.typesafe.akka" % "akka-slf4j_2.10" % "2.3.3", "com.typesafe.akka" %% "akka-actor" % "2.3.3", "com.typesafe.akka" %% "akka-remote" % "2.3.3", "com.typesafe.akka" %% "akka-agent" % "2.3.3", "com.typesafe.slick" %% "slick" % "2.0.1-RC1", "org.mozilla" % "rhino" % "1.7R4", "org.postgresql" % "postgresql" % "9.3-1101-jdbc3", "org.msgpack" %% "msgpack-scala" % "0.6.8", "com.livestream" %% "scredis" % "1.1.2", "com.confabulous" %% "messages" % "0.0.1-SNAPSHOT", "com.confabulous" %% "db" % "0.0.1-SNAPSHOT" ) packageArchetype.java_server maintainer := "Dan Ellis <dan@halftreelabs.com>"
更多信息应该从sbt-native-packager文档中获得。 也欢迎评论。