Upgrade to scala 2.13.1

Dockerfile

@@ -30,7 +30,7 @@ RUN         cd ./cache/ && sbt -v +compile
 ADD         ./project ./cache/project/
 ADD         ./build.sbt ./cache/
 RUN         mkdir -p ./cache/core/src/test/scala/ ./cache/docs
-RUN         echo "class Test extends org.scalatest.flatspec.AnyFlatSpec { it should \"x\" in {} }" > ./cache/core/src/test/scala/Test.scala
+RUN         echo "class Test" > ./cache/core/src/test/scala/Test.scala
 RUN         echo "Lorem ipsum" > ./cache/docs/index.md
 RUN         cd ./cache/ && sbt -v ";set every sourceGenerators := List.empty;coverage;+test;website/makeMicrosite"
 

build.sbt

@@ -54,6 +54,7 @@ lazy val website = project
       )
     },
     micrositeAnalyticsToken := "UA-64109905-2",
-    micrositeDescription := (lokal / description).value
+    micrositeDescription := (lokal / description).value,
+    scalaVersion := "2.13.0"
   )
   .dependsOn(dsl.jvm)

scalaVersion.sbt

@@ -1,3 +1,3 @@
-ThisBuild / scalaVersion := "2.13.0"
+ThisBuild / scalaVersion := "2.13.1"
 
 ThisBuild / crossScalaVersions := List("2.11.12", "2.12.10", scalaVersion.value)