only run docker task if docker is running

buildSrc/src/main/kotlin/dev/adamko/kafkatorio/task/DockerComposeExec.kt

@@ -8,6 +8,7 @@ import org.gradle.api.file.RegularFileProperty
 import org.gradle.api.logging.LogLevel
 import org.gradle.api.model.ObjectFactory
 import org.gradle.api.provider.Property
+import org.gradle.api.provider.ProviderFactory
 import org.gradle.api.tasks.CacheableTask
 import org.gradle.api.tasks.Input
 import org.gradle.api.tasks.InputDirectory
@@ -16,15 +17,16 @@ import org.gradle.api.tasks.PathSensitive
 import org.gradle.api.tasks.PathSensitivity
 import org.gradle.api.tasks.SkipWhenEmpty
 import org.gradle.api.tasks.TaskAction
+import org.gradle.kotlin.dsl.property
 import org.gradle.process.ExecOperations
-import org.gradle.work.Incremental
 import org.gradle.work.NormalizeLineEndings
 import org.jetbrains.kotlin.util.parseSpaceSeparatedArgs
 
 @CacheableTask
 abstract class DockerComposeExec @Inject constructor(
   private val executor: ExecOperations,
-  private val objectFactory: ObjectFactory,
+  private val objects: ObjectFactory,
+  private val providers: ProviderFactory,
 ) : DefaultTask() {
 
   @get:InputDirectory
@@ -36,14 +38,28 @@ abstract class DockerComposeExec @Inject constructor(
   @get:Input
   abstract val command: Property<String>
 
+  @get:Input
+  val dockerIsActive: Property<Boolean> = objects.property<Boolean>().convention(
+    providers.exec {
+      commandLine = parseSpaceSeparatedArgs("docker info")
+      isIgnoreExitValue = true
+    }.result.map {
+      it.exitValue == 0
+    }
+  )
+
   @get:OutputFile
-  val stateFile: RegularFileProperty = objectFactory.fileProperty().convention {
+  val stateFile: RegularFileProperty = objects.fileProperty().convention {
     temporaryDir.resolve("docker-files.md5")
   }
 
   init {
     group = DOCKER_COMPOSE_GROUP
     logging.captureStandardOutput(LogLevel.LIFECYCLE)
+
+    super.onlyIf {
+      it is DockerComposeExec && it.dockerIsActive.getOrElse(false)
+    }
   }
 
   @TaskAction