Adds enableReproducibleBuilds parameter to jib-maven-plugin. (#111)

Author: coollog

examples/helloworld/pom.xml

@@ -6,7 +6,7 @@
   <version>1</version>
 
   <properties>
-    <jib-maven-plugin.version>0.1.0</jib-maven-plugin.version>
+    <jib-maven-plugin.version>0.1.2</jib-maven-plugin.version>
     <mainClass>example.HelloWorld</mainClass>
   </properties>
 

jib-core/src/main/java/com/google/cloud/tools/jib/image/LayerBuilder.java

@@ -98,13 +98,11 @@ public UnwrittenLayer build() throws IOException {
   private void makeListReproducible(List<TarArchiveEntry> entries) {
     entries.sort(Comparator.comparing(TarArchiveEntry::getName));
     for (TarArchiveEntry entry : entries) {
-      if (enableReproducibleBuilds) {
-        entry.setModTime(0);
-        entry.setGroupId(0);
-        entry.setUserId(0);
-        entry.setUserName("");
-        entry.setGroupName("");
-      }
+      entry.setModTime(0);
+      entry.setGroupId(0);
+      entry.setUserId(0);
+      entry.setUserName("");
+      entry.setGroupName("");
     }
   }
 

jib-maven-plugin/src/main/java/com/google/cloud/tools/jib/maven/BuildImageMojo.java

@@ -89,6 +89,9 @@ public class BuildImageMojo extends AbstractMojo {
 
   @Parameter private String mainClass;
 
+  @Parameter(defaultValue = "true", required = true)
+  private boolean enableReproducibleBuilds;
+
   @Override
   public void execute() throws MojoExecutionException, MojoFailureException {
     validateParameters();
@@ -144,6 +147,7 @@ public void execute() throws MojoExecutionException, MojoFailureException {
             .setMainClass(mainClass)
             .setJvmFlags(jvmFlags)
             .setEnvironment(environment)
+            .setEnableReproducibleBuilds(enableReproducibleBuilds)
             .build();
 
     // Uses a directory in the Maven build cache as the Jib cache.