Cannot pack templates/etc-default into Docker container

[alaz]

I am trying to build a Docker container w/ the application default arguments in /etc/default/<name>. I've started with the simplest possible example sbt-native-packager-examples / docker. As far as I understand not all of the documentation is up-to-date to the current 1.0.0-M1 release, so I had to dig a bit myself. Unfortunately I still cannot manage to create etc/default/.. automatically.

I have a master branch of https://github.com/muuki88/sbt-native-packager-examples w/ the following changes:

diff --git a/docker/build.sbt b/docker/build.sbt
index 3a54c10..e9f00e9 100644
--- a/docker/build.sbt
+++ b/docker/build.sbt
@@ -1,5 +1,3 @@
-import NativePackagerKeys._
-
 name := "mukis-docking-station"

 version := "1.0"
@@ -10,13 +8,10 @@ libraryDependencies ++= Seq(

 mainClass in Compile := Some("de.mukis.ConfigApp")

-packageArchetype.java_server
+enablePlugins(JavaServerAppPackaging, DockerPlugin)

 maintainer in Docker := "Nepomuk Seiler <nepomuk.seiler@mukis.de>"

 packageSummary in Docker := "A small docker application"

 packageDescription := "Docker [micro|nano] Service"
-
-// Only add this if you want to rename your docker image name
-packageName in Docker := "docking-station"
diff --git a/docker/project/build.properties b/docker/project/build.properties
index be6c454..64abd37 100644
--- a/docker/project/build.properties
+++ b/docker/project/build.properties
@@ -1 +1 @@
-sbt.version=0.13.5
+sbt.version=0.13.6
diff --git a/docker/project/plugins.sbt b/docker/project/plugins.sbt
index bfe0a10..fb07d6a 100644
--- a/docker/project/plugins.sbt
+++ b/docker/project/plugins.sbt
@@ -1,4 +1,4 @@
 // The Typesafe repository 
 resolvers += "Typesafe repository" at "http://repo.typesafe.com/typesafe/releases/"

-addSbtPlugin("com.typesafe.sbt" %% "sbt-native-packager" % "0.8.0-M1")
+addSbtPlugin("com.typesafe.sbt" %% "sbt-native-packager" % "1.0.0-M1")

Running sbt clean docker:stage in docker folder results in:

$ LANG=C ls -lR target/docker
total 8
-rw-r--r--+ 1 alaz  staff  207 Nov  2 13:07 Dockerfile
drwxr-xr-x+ 3 alaz  staff  102 Nov  2 13:07 files

target/docker/files:
total 0
drwxr-xr-x+ 3 alaz  staff  102 Nov  2 13:07 opt

target/docker/files/opt:
total 0
drwxr-xr-x+ 4 alaz  staff  136 Nov  2 13:07 docker

target/docker/files/opt/docker:
total 0
drwxr-xr-x+ 4 alaz  staff  136 Nov  2 13:07 bin
drwxr-xr-x+ 5 alaz  staff  170 Nov  2 13:07 lib

target/docker/files/opt/docker/bin:
total 40
-rwxr--r--+ 1 alaz  staff  10489 Nov  2 13:07 mukis-docking-station
-rw-r--r--+ 1 alaz  staff   4946 Nov  2 13:07 mukis-docking-station.bat

target/docker/files/opt/docker/lib:
total 14368
-rw-r--r--+ 1 alaz  staff   217897 Jan 15  2014 com.typesafe.config-1.2.0.jar
-rw-r--r--+ 1 alaz  staff     5061 Nov  2 13:07 mukis-docking-station.mukis-docking-station-1.0.jar
-rw-r--r--+ 1 alaz  staff  7126372 Mar 18  2014 org.scala-lang.scala-library-2.10.4.jar

[muuki88]

I think the etc-default file is not the right way if you create a docker container.
Instead you want to change these settings

bashScriptConfigLocation := Some("/opt/docker/" + packageName.value + "/conf/etc-default")

Then put a etc-default in src/universal/conf/ and your application will pick it up correctly.

However this won't work yet. I just submitted a fix for this.

[alaz]

Thanks!

I have also

defaultLinuxInstallLocation in Docker := "/app"

b/c I prefer /app location for applications in a Docker container. Is it idiomatic? (sorry for asking in this issue)

[muuki88]

Im not sure about idiomatic docker, but /opt/ is one of the unix standard app directories.