Gradle: Use the docker-remote-api plugin to create an image for runni…

…ng ORT

In constract to JIB [1], this plugin can build a base image from a
Dockerfile.

[1] GoogleContainerTools/jib#657 (comment)

build.gradle

@@ -4,6 +4,13 @@ plugins {
 
     id 'com.github.ben-manes.versions' apply false
     id 'io.gitlab.arturbosch.detekt' apply false
+
+    id 'com.bmuschko.docker-remote-api'
+}
+
+task buildDockerBaseImage(type: com.bmuschko.gradle.docker.tasks.image.DockerBuildImage) {
+    // This uses 'docker/Dockerfile'.
+    tag = 'ort-base:latest'
 }
 
 subprojects {

docker/Dockerfile

@@ -0,0 +1 @@
+FROM openjdk:jre-alpine

gradle.properties

@@ -1,4 +1,5 @@
 detektPluginVersion = 1.0.0.RC9.2
+dockerRemoteApiPluginVersion = 4.0.3
 dokkaPluginVersion = 0.9.16
 kotlinPluginVersion = 1.3.0
 versionsPluginVersion = 0.20.0

settings.gradle

@@ -3,8 +3,9 @@ pluginManagement {
         eachPlugin {
             // Work around https://github.com/gradle/gradle/issues/1697.
             if (requested.version == null) {
+                def idName = requested.id.name.split('-').collect { it.capitalize() }.join().uncapitalize()
                 def versionPropertyName = (requested.id.id == 'org.jetbrains.kotlin.jvm') ?
-                        "kotlinPluginVersion" : "${requested.id.name}PluginVersion"
+                        "kotlinPluginVersion" : "${idName}PluginVersion"
                 logger.info("Checking for plugin version property '$versionPropertyName'.")
                 if (gradle.rootProject.hasProperty(versionPropertyName)) {
                     def version = gradle.rootProject.properties[versionPropertyName]