Remove redundant Dockerfile

src/main/scala/com/typesafe/sbt/packager/docker/DockerPlugin.scala

@@ -112,10 +112,6 @@ object DockerPlugin extends AutoPlugin {
     Seq(
       executableScriptName := executableScriptName.value,
       mappings ++= dockerPackageMappings.value,
-      mappings ++= {
-        val baseDir = target.value
-        Seq(dockerGenerateConfig.value) pair (file => IO.relativize(baseDir, file))
-      },
       name := name.value,
       packageName := packageName.value,
       publishLocal := {
@@ -145,13 +141,14 @@ object DockerPlugin extends AutoPlugin {
       },
       sourceDirectory := sourceDirectory.value / "docker",
       stage := Stager.stage(Docker.name)(streams.value, stagingDirectory.value, mappings.value),
+      stage := (stage dependsOn dockerGenerateConfig).value,
       stagingDirectory := (target in Docker).value / "stage",
       target := target.value / "docker",
       daemonUser := "daemon",
       daemonGroup := daemonUser.value,
       defaultLinuxInstallLocation := "/opt/docker",
       dockerPackageMappings := MappingsHelper.contentOf(sourceDirectory.value),
-      dockerGenerateConfig := generateDockerConfig(dockerCommands.value, target.value)
+      dockerGenerateConfig := generateDockerConfig(dockerCommands.value, stagingDirectory.value)
     )
   )
 

src/sbt-test/docker/entrypoint/test

@@ -1,3 +1,3 @@
 # Stage the distribution and ensure files show up.
 > docker:stage
-$ exec grep -q -F 'ENTRYPOINT ["/bin/sh", "-c", "env"]' target/docker/Dockerfile
+$ exec grep -q -F 'ENTRYPOINT ["/bin/sh", "-c", "env"]' target/docker/stage/Dockerfile

src/sbt-test/docker/labels/build.sbt

@@ -8,7 +8,7 @@ dockerLabels := Map("foo" -> "bar", "fooBar" -> "foo bar", "number" -> "123")
 
 
 TaskKey[Unit]("checkDockerfile") := {
-  val dockerfile = IO.read((target in Docker).value / "Dockerfile")
+  val dockerfile = IO.read((stagingDirectory in Docker).value / "Dockerfile")
 
   assert(dockerfile contains """LABEL foo="bar"""", s"does not contain foo=bar\n$dockerfile")
   assert(dockerfile contains """LABEL fooBar="foo bar"""", s"does not contain foo=bar\n$dockerfile")

src/sbt-test/docker/ports/test

@@ -1,3 +1,3 @@
 # Stage the distribution and ensure files show up.
 > docker:stage
-$ exec grep -q -F 'EXPOSE 9000 9001 10000/udp 10001/udp' target/docker/Dockerfile
+$ exec grep -q -F 'EXPOSE 9000 9001 10000/udp 10001/udp' target/docker/stage/Dockerfile

src/sbt-test/docker/test-executableScriptName/build.sbt

@@ -11,7 +11,7 @@ version := "0.1.0"
 maintainer := "Gary Coady <[email protected]>"
 
 TaskKey[Unit]("checkDockerfile") := {
-  val dockerfile = IO.read(target.value / "docker" / "Dockerfile")
+  val dockerfile = IO.read((stagingDirectory in Docker).value / "Dockerfile")
   assert(
     dockerfile.contains("ENTRYPOINT [\"bin/docker-exec\"]\n"),
     "dockerfile doesn't contain ENTRYPOINT [\"docker-exec\"]\n" + dockerfile

src/sbt-test/docker/test-packageName-universal/build.sbt

@@ -9,7 +9,7 @@ version := "0.1.0"
 maintainer := "Gary Coady <[email protected]>"
 
 TaskKey[Unit]("checkDockerfile") := {
-  val dockerfile = IO.read(target.value / "docker" / "Dockerfile")
+  val dockerfile = IO.read((stagingDirectory in Docker).value / "Dockerfile")
   assert(
     dockerfile.contains("ENTRYPOINT [\"bin/docker-test\"]\n"),
     "dockerfile doesn't contain ENTRYPOINT [\"docker-test\"]\n" + dockerfile

src/sbt-test/docker/test-packageName/build.sbt

@@ -10,7 +10,7 @@ version := "0.1.0"
 maintainer := "Gary Coady <[email protected]>"
 
 TaskKey[Unit]("checkDockerfile") := {
-  val dockerfile = IO.read(target.value / "docker" / "Dockerfile")
+  val dockerfile = IO.read((stagingDirectory in Docker).value / "Dockerfile")
   assert(
     dockerfile.contains("ENTRYPOINT [\"bin/docker-test\"]\n"),
     "dockerfile doesn't contain ENTRYPOINT [\"docker-test\"]\n" + dockerfile

src/sbt-test/docker/udp-only-ports/test

@@ -1,3 +1,3 @@
 # Stage the distribution and ensure files show up.
 > docker:stage
-$ exec grep -q -F 'EXPOSE 10000/udp 10001/udp' target/docker/Dockerfile
+$ exec grep -q -F 'EXPOSE 10000/udp 10001/udp' target/docker/stage/Dockerfile

src/sbt-test/docker/volumes/test

@@ -1,5 +1,5 @@
 # Stage the distribution and ensure files show up.
 > docker:stage
-$ exec grep -q -F 'VOLUME ["/opt/docker/logs", "/opt/docker/config"]' target/docker/Dockerfile
-$ exec grep -q -F 'RUN ["chown", "-R", "daemon:daemon", "/opt/docker/logs", "/opt/docker/config"]' target/docker/Dockerfile
-$ exec grep -q -F 'RUN ["mkdir", "-p", "/opt/docker/logs", "/opt/docker/config"]' target/docker/Dockerfile
+$ exec grep -q -F 'VOLUME ["/opt/docker/logs", "/opt/docker/config"]' target/docker/stage/Dockerfile
+$ exec grep -q -F 'RUN ["chown", "-R", "daemon:daemon", "/opt/docker/logs", "/opt/docker/config"]' target/docker/stage/Dockerfile
+$ exec grep -q -F 'RUN ["mkdir", "-p", "/opt/docker/logs", "/opt/docker/config"]' target/docker/stage/Dockerfile