Use explicit openjdk:8 Tag

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

@@ -81,7 +81,7 @@ object DockerPlugin extends AutoPlugin {
     // run validation, and warn the build users if the strategy is not compatible with `docker` that's in scope.
     dockerPermissionStrategy := DockerPermissionStrategy.MultiStage,
     dockerChmodType := DockerChmodType.UserGroupReadExecute,
-    dockerBaseImage := "openjdk:8",
+    dockerBaseImage := "openjdk:8u342",
     dockerExposedPorts := Seq(),
     dockerExposedUdpPorts := Seq(),
     dockerExposedVolumes := Seq(),

src/sbt-test/docker/file-permission/build.sbt

@@ -79,7 +79,7 @@ lazy val root = (project in file("."))
       val lines = dockerfile.linesIterator.toList
       assertEquals(
         lines,
-        """FROM openjdk:8 AS mainstage
+        """FROM openjdk:8u342 AS mainstage
           |USER root
           |RUN id -u demiourgos728 1>/dev/null 2>&1 || (( getent group 0 1>/dev/null 2>&1 || ( type groupadd 1>/dev/null 2>&1 && groupadd -g 0 root || addgroup -g 0 -S root )) && ( type useradd 1>/dev/null 2>&1 && useradd --system --create-home --uid 1001 --gid 0 demiourgos728 || adduser -S -u 1001 -G root demiourgos728 ))
           |WORKDIR /opt/docker

src/sbt-test/docker/jdk-versions/build.sbt

@@ -7,7 +7,7 @@ lazy val `jdk8` = project
   .enablePlugins(JavaAppPackaging)
   .settings(
     name := basename + "-8",
-    dockerBaseImage := "openjdk:8u162-jre",
+    dockerBaseImage := "openjdk:8u342-jre",
     dockerBuildOptions := dockerBuildOptions.value ++ Seq("-t", "jdk-versions:8")
   )
 

src/sbt-test/docker/override-commands/build.sbt

@@ -9,7 +9,7 @@ maintainer := "Gary Coady <[email protected]>"
 
 dockerUpdateLatest := true
 dockerCommands := Seq(
-  Cmd("FROM", "openjdk:8"),
+  Cmd("FROM", "openjdk:8u342"),
   Cmd("LABEL", s"""MAINTAINER="${maintainer.value}""""),
   ExecCmd("CMD", "echo", "Hello, World from Docker")
 )

src/sphinx/formats/docker.rst

@@ -337,7 +337,7 @@ In your sbt console type
 .. code-block:: bash
 
     > show dockerCommands
-    [info] List(Cmd(FROM,openjdk:8), Cmd(LABEL,MAINTAINER=Your Name <[email protected]>), ...)
+    [info] List(Cmd(FROM,openjdk:8u342), Cmd(LABEL,MAINTAINER=Your Name <[email protected]>), ...)
 
 
 
@@ -405,7 +405,7 @@ Now let's start adding some Docker commands.
   import com.typesafe.sbt.packager.docker._
 
   dockerCommands := Seq(
-    Cmd("FROM", "openjdk:8"),
+    Cmd("FROM", "openjdk:8u342"),
     Cmd("LABEL", s"""MAINTAINER="${maintainer.value}""""),
     ExecCmd("CMD", "echo", "Hello, World from Docker")
   )

test-project-docker/build.sbt

@@ -4,7 +4,7 @@ name := "docker-test"
 version := "0.1.0"
 
 maintainer := "Gary Coady <[email protected]>"
-dockerBaseImage := "openjdk:8-jre-alpine"
+dockerBaseImage := "openjdk:8u342-jre-alpine"
 dockerUpdateLatest := true
 dockerBuildxPlatforms := Seq("linux/arm64/v8", "linux/amd64")
 dockerUsername := Some("dswiecki")