diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index f6afb0648b..c2caef8984 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -24,7 +24,9 @@ Jib comes as 3 components:
   - `jib-maven-plugin`: a Maven plugin that uses `jib-core` and `jib-plugins-common`
   - `jib-gradle-plugin`: a Gradle plugin that uses `jib-core` and `jib-plugins-common`
 
-To build, use the provided `build.sh` which builds and tests each of the components into your local `~/.m2/repository`.  Note that this script does not run integration tests.
+To build, use the provided `build.sh` which builds and tests each of the
+components into your local `~/.m2/repository`.  Note that this script does
+not run integration tests.
 
 ## Code Reviews
 
@@ -45,7 +47,17 @@ To build, use the provided `build.sh` which builds and tests each of the compone
 5. Associate the change with an existing issue or file a [new issue](../../issues).
 6. Create a pull request!
 
-**Note** that in order to run integration tests, you will need to set the environment variable `JIB_INTEGRATION_TESTING_PROJECT` to the GCP project you would like to use for testing. You will also need Docker installed with the daemon running. Otherwise, feel free to skip integration tests.
+**Note** that in order to run integration tests, you will need to set one of the
+following environment variables:
+
+  - `JIB_INTEGRATION_TESTING_PROJECT`: the GCP project to use for testing;
+    the registry tested will be `gcr.io/<JIB_INTEGRATION_TESTING_PROJECT>`.
+  - `JIB_INTEGRATION_TESTING_LOCATION`: a specific registry for testing.
+    To run the integration tests locally, you can run
+    `docker run -d -p 9990:5000 registry:2` and use `localhost:9990`.
+
+You will also need Docker installed with the daemon running. Note that the
+integration tests will create local registries on ports 5000 and 6000.
 
 # Development Tips
 
diff --git a/jib-core/src/integration-test/java/com/google/cloud/tools/jib/IntegrationTestingConfiguration.java b/jib-core/src/integration-test/java/com/google/cloud/tools/jib/IntegrationTestingConfiguration.java
index f39ef24abc..7c3e0ef844 100644
--- a/jib-core/src/integration-test/java/com/google/cloud/tools/jib/IntegrationTestingConfiguration.java
+++ b/jib-core/src/integration-test/java/com/google/cloud/tools/jib/IntegrationTestingConfiguration.java
@@ -22,13 +22,19 @@
 /** Configuration for integration tests. */
 public class IntegrationTestingConfiguration {
 
-  public static String getGCPProject() {
+  public static String getTestRepositoryLocation() {
     String projectId = System.getenv("JIB_INTEGRATION_TESTING_PROJECT");
-    if (Strings.isNullOrEmpty(projectId)) {
+    if (!Strings.isNullOrEmpty(projectId)) {
+      return "gcr.io/" + projectId;
+    }
+    String location = System.getenv("JIB_INTEGRATION_TESTING_LOCATION");
+    if (Strings.isNullOrEmpty(location)) {
       Assert.fail(
-          "Must set environment variable JIB_INTEGRATION_TESTING_PROJECT to the GCP project to use for integration testing.");
+          "Must set environment variable JIB_INTEGRATION_TESTING_PROJECT to the "
+              + "GCP project to use for integration testing or "
+              + "JIB_INTEGRATION_TESTING_LOCATION to a suitable registry/repository location.");
     }
-    return projectId;
+    return location;
   }
 
   private IntegrationTestingConfiguration() {}
diff --git a/jib-gradle-plugin/src/integration-test/java/com/google/cloud/tools/jib/gradle/EmptyProjectIntegrationTest.java b/jib-gradle-plugin/src/integration-test/java/com/google/cloud/tools/jib/gradle/EmptyProjectIntegrationTest.java
index f382198c46..db839e9e0e 100644
--- a/jib-gradle-plugin/src/integration-test/java/com/google/cloud/tools/jib/gradle/EmptyProjectIntegrationTest.java
+++ b/jib-gradle-plugin/src/integration-test/java/com/google/cloud/tools/jib/gradle/EmptyProjectIntegrationTest.java
@@ -62,8 +62,7 @@ private static void assertDockerInspect(String imageReference)
   @Test
   public void testBuild_empty() throws IOException, InterruptedException, DigestException {
     String targetImage =
-        "gcr.io/"
-            + IntegrationTestingConfiguration.getGCPProject()
+        IntegrationTestingConfiguration.getTestRepositoryLocation()
             + "/emptyimage:gradle"
             + System.nanoTime();
     Assert.assertEquals("", JibRunHelper.buildAndRun(emptyTestProject, targetImage));
@@ -75,8 +74,7 @@ public void testBuild_empty() throws IOException, InterruptedException, DigestEx
   public void testBuild_multipleTags()
       throws IOException, InterruptedException, InvalidImageReferenceException, DigestException {
     String targetImage =
-        "gcr.io/"
-            + IntegrationTestingConfiguration.getGCPProject()
+        IntegrationTestingConfiguration.getTestRepositoryLocation()
             + "/multitag-image:gradle"
             + System.nanoTime();
     JibRunHelper.buildAndRunAdditionalTag(
diff --git a/jib-gradle-plugin/src/integration-test/java/com/google/cloud/tools/jib/gradle/JibRunHelper.java b/jib-gradle-plugin/src/integration-test/java/com/google/cloud/tools/jib/gradle/JibRunHelper.java
index 975483883a..17e909a05f 100644
--- a/jib-gradle-plugin/src/integration-test/java/com/google/cloud/tools/jib/gradle/JibRunHelper.java
+++ b/jib-gradle-plugin/src/integration-test/java/com/google/cloud/tools/jib/gradle/JibRunHelper.java
@@ -55,6 +55,7 @@ static String buildAndRun(
             "-Djib.useOnlyProjectCache=true",
             "-Djib.console=plain",
             "-D_TARGET_IMAGE=" + imageReference,
+            "-Djib.allowInsecureRegistries=" + imageReference.startsWith("localhost"),
             "-b=" + gradleBuildFile);
     assertBuildSuccess(buildResult, "jib", "Built and pushed image as ");
     assertImageDigestAndId(testProject.getProjectRoot());
@@ -73,6 +74,7 @@ static void buildAndRunAdditionalTag(
             "-Djib.useOnlyProjectCache=true",
             "-Djib.console=plain",
             "-D_TARGET_IMAGE=" + imageReference,
+            "-Djib.allowInsecureRegistries=" + imageReference.startsWith("localhost"),
             "-D_ADDITIONAL_TAG=" + additionalTag);
     assertBuildSuccess(buildResult, "jib", "Built and pushed image as ");
     assertImageDigestAndId(testProject.getProjectRoot());
@@ -99,6 +101,7 @@ static BuildResult buildToDockerDaemon(
             "-Djib.useOnlyProjectCache=true",
             "-Djib.console=plain",
             "-D_TARGET_IMAGE=" + imageReference,
+            "-Djib.allowInsecureRegistries=" + imageReference.startsWith("localhost"),
             "-b=" + gradleBuildFile);
     assertBuildSuccess(buildResult, "jibDockerBuild", "Built image to Docker daemon as ");
     assertImageDigestAndId(testProject.getProjectRoot());
diff --git a/jib-gradle-plugin/src/integration-test/java/com/google/cloud/tools/jib/gradle/SingleProjectIntegrationTest.java b/jib-gradle-plugin/src/integration-test/java/com/google/cloud/tools/jib/gradle/SingleProjectIntegrationTest.java
index 4598457ae0..29da90afb2 100644
--- a/jib-gradle-plugin/src/integration-test/java/com/google/cloud/tools/jib/gradle/SingleProjectIntegrationTest.java
+++ b/jib-gradle-plugin/src/integration-test/java/com/google/cloud/tools/jib/gradle/SingleProjectIntegrationTest.java
@@ -179,8 +179,7 @@ public void setup() throws IOException, InterruptedException {
   @Test
   public void testBuild_simple() throws IOException, InterruptedException, DigestException {
     String targetImage =
-        "gcr.io/"
-            + IntegrationTestingConfiguration.getGCPProject()
+        IntegrationTestingConfiguration.getTestRepositoryLocation()
             + "/simpleimage:gradle"
             + System.nanoTime();
 
@@ -218,8 +217,7 @@ public void testBuild_simple() throws IOException, InterruptedException, DigestE
   @Test
   public void testBuild_failOffline() {
     String targetImage =
-        "gcr.io/"
-            + IntegrationTestingConfiguration.getGCPProject()
+        IntegrationTestingConfiguration.getTestRepositoryLocation()
             + "/simpleimageoffline:gradle"
             + System.nanoTime();
 
diff --git a/jib-gradle-plugin/src/integration-test/java/com/google/cloud/tools/jib/gradle/WarProjectIntegrationTest.java b/jib-gradle-plugin/src/integration-test/java/com/google/cloud/tools/jib/gradle/WarProjectIntegrationTest.java
index 5a093ee96c..1b161061ce 100644
--- a/jib-gradle-plugin/src/integration-test/java/com/google/cloud/tools/jib/gradle/WarProjectIntegrationTest.java
+++ b/jib-gradle-plugin/src/integration-test/java/com/google/cloud/tools/jib/gradle/WarProjectIntegrationTest.java
@@ -74,7 +74,7 @@ public void testBuild_tomcatServlet25()
 
   private void verifyBuildAndRun(TestProject project, String label, String gradleBuildFile)
       throws IOException, InterruptedException, DigestException {
-    String nameBase = "gcr.io/" + IntegrationTestingConfiguration.getGCPProject() + '/';
+    String nameBase = IntegrationTestingConfiguration.getTestRepositoryLocation() + '/';
     String targetImage = nameBase + label + System.nanoTime();
     String output =
         JibRunHelper.buildAndRun(project, targetImage, gradleBuildFile, "--detach", "-p8080:8080");
diff --git a/jib-maven-plugin/src/test/java/com/google/cloud/tools/jib/maven/BuildImageMojoIntegrationTest.java b/jib-maven-plugin/src/test/java/com/google/cloud/tools/jib/maven/BuildImageMojoIntegrationTest.java
index 645c6cb9af..603d2dfe02 100644
--- a/jib-maven-plugin/src/test/java/com/google/cloud/tools/jib/maven/BuildImageMojoIntegrationTest.java
+++ b/jib-maven-plugin/src/test/java/com/google/cloud/tools/jib/maven/BuildImageMojoIntegrationTest.java
@@ -74,8 +74,8 @@ public class BuildImageMojoIntegrationTest {
   @ClassRule
   public static final TestProject servlet25Project = new TestProject(testPlugin, "war_servlet25");
 
-  private static String getGcrImageReference(String label) {
-    String nameBase = "gcr.io/" + IntegrationTestingConfiguration.getGCPProject() + '/';
+  private static String getTestImageReference(String label) {
+    String nameBase = IntegrationTestingConfiguration.getTestRepositoryLocation() + '/';
     return nameBase + label + System.nanoTime();
   }
 
@@ -104,6 +104,9 @@ private static Verifier build(
     Verifier verifier = new Verifier(projectRoot.toString());
     verifier.setSystemProperty("jib.useOnlyProjectCache", "true");
     verifier.setSystemProperty("_TARGET_IMAGE", imageReference);
+    if (imageReference.startsWith("localhost")) {
+      verifier.setSystemProperty("jib.allowInsecureRegistries", "true");
+    }
     verifier.setAutoclean(false);
     verifier.addCliOption("-X");
     verifier.addCliOption("--file=" + pomXml);
@@ -163,6 +166,9 @@ private static String buildAndRunAdditionalTag(
     verifier.setSystemProperty("jib.useOnlyProjectCache", "true");
     verifier.setSystemProperty("_TARGET_IMAGE", imageReference);
     verifier.setSystemProperty("_ADDITIONAL_TAG", additionalTag);
+    if (imageReference.startsWith("localhost")) {
+      verifier.setSystemProperty("jib.allowInsecureRegistries", "true");
+    }
     verifier.setAutoclean(false);
     verifier.addCliOption("-X");
     verifier.executeGoals(Arrays.asList("clean", "compile", "jib:build"));
@@ -324,7 +330,7 @@ public void tearDown() throws IOException, InterruptedException {
   @Test
   public void testExecute_simple()
       throws VerificationException, IOException, InterruptedException, DigestException {
-    String targetImage = getGcrImageReference("simpleimage:maven");
+    String targetImage = getTestImageReference("simpleimage:maven");
 
     // Test empty output error
     try {
@@ -372,7 +378,7 @@ public void testExecute_simple()
 
   @Test
   public void testExecute_failOffline() throws IOException {
-    String targetImage = getGcrImageReference("simpleimageoffline:maven");
+    String targetImage = getTestImageReference("simpleimageoffline:maven");
 
     // Test empty output error
     try {
@@ -395,7 +401,7 @@ public void testExecute_simpleOnJava11()
       throws DigestException, VerificationException, IOException, InterruptedException {
     Assume.assumeTrue(isJava11RuntimeOrHigher());
 
-    String targetImage = getGcrImageReference("simpleimage:maven");
+    String targetImage = getTestImageReference("simpleimage:maven");
     Assert.assertEquals(
         "Hello, world. An argument.\n",
         buildAndRun(simpleTestProject.getProjectRoot(), targetImage, "pom-java11.xml", false));
@@ -424,7 +430,7 @@ public void testExecute_simpleWithIncomptiableJava11()
   @Test
   public void testExecute_empty()
       throws InterruptedException, IOException, VerificationException, DigestException {
-    String targetImage = getGcrImageReference("emptyimage:maven");
+    String targetImage = getTestImageReference("emptyimage:maven");
     Assert.assertEquals(
         "", buildAndRun(emptyTestProject.getProjectRoot(), targetImage, "pom.xml", false));
     assertCreationTimeEpoch(targetImage);
@@ -435,7 +441,7 @@ public void testExecute_empty()
   public void testExecute_multipleTags()
       throws IOException, InterruptedException, InvalidImageReferenceException,
           VerificationException, DigestException {
-    String targetImage = getGcrImageReference("multitag-image:maven");
+    String targetImage = getTestImageReference("multitag-image:maven");
     Assert.assertEquals(
         "",
         buildAndRunAdditionalTag(
@@ -445,7 +451,7 @@ public void testExecute_multipleTags()
   @Test
   public void testExecute_multipleExtraDirectories()
       throws DigestException, VerificationException, IOException, InterruptedException {
-    String targetImage = getGcrImageReference("simpleimage:maven");
+    String targetImage = getTestImageReference("simpleimage:maven");
     Assert.assertEquals(
         "Hello, world. An argument.\nrw-r--r--\nrw-r--r--\nfoo\ncat\nbaz\n",
         buildAndRun(simpleTestProject.getProjectRoot(), targetImage, "pom-extra-dirs.xml", false));
@@ -469,7 +475,7 @@ public void testExecute_bothDeprecatedAndNewExtraDirectoryConfigUsed() throws IO
   @Test
   public void testExecute_deprecatedExtraDirectoryConfigUsed()
       throws IOException, VerificationException {
-    String targetImage = getGcrImageReference("simpleimage:maven");
+    String targetImage = getTestImageReference("simpleimage:maven");
     build(simpleTestProject.getProjectRoot(), targetImage, "pom-deprecated-extra-dir.xml", false)
         .verifyTextInLog(
             "<extraDirectory> is deprecated; use <extraDirectories> with <paths><path>");
@@ -594,11 +600,14 @@ public void testExecute_tomcatServlet25()
 
   private void buildAndRunWar(String label, String pomXml)
       throws VerificationException, IOException, InterruptedException {
-    String targetImage = getGcrImageReference(label);
+    String targetImage = getTestImageReference(label);
 
     Verifier verifier = new Verifier(servlet25Project.getProjectRoot().toString());
     verifier.setSystemProperty("jib.useOnlyProjectCache", "true");
     verifier.setSystemProperty("_TARGET_IMAGE", targetImage);
+    if (targetImage.startsWith("localhost")) {
+      verifier.setSystemProperty("jib.allowInsecureRegistries", "true");
+    }
     verifier.setAutoclean(false);
     verifier.addCliOption("-X");
     verifier.addCliOption("--file=" + pomXml);