diff --git a/README.md b/README.md
index 5d22488..3bfdb42 100644
--- a/README.md
+++ b/README.md
@@ -1,8 +1,8 @@
 # Bitbucket Pipelines Runner
-`bbrun` is a  command line tool to execute [Bitbucket Pipelines](https://confluence.atlassian.com/bitbucket/configure-bitbucket-pipelines-yml-792298910.html) locally.
 
-[![Build Status](https://travis-ci.org/mserranom/bbrun.svg?branch=master)](https://travis-ci.org/mserranom/bbrun)
+`bbrun` is a command line tool to execute [Bitbucket Pipelines](https://confluence.atlassian.com/bitbucket/configure-bitbucket-pipelines-yml-792298910.html) locally.
 
+[![Build Status](https://travis-ci.org/mserranom/bbrun.svg?branch=master)](https://travis-ci.org/mserranom/bbrun)
 
 ## Install
 
@@ -62,6 +62,11 @@ hello world!
       $ bbrun test --env "EDITOR=vim, USER=root"
 ```
 
+## Caveats
+
+- Not all Bitbucket features are covered, check [open issues](https://github.com/mserranom/bbrun/issues) for an overview of the roadmap.
+- [Private images](https://confluence.atlassian.com/bitbucket/use-docker-images-as-build-environments-792298897.html) are supported, but the user has to login in the Docker Registry before executing `bbrun` (thus credentials in the file are ignored).
+
 ## Build and Test
 
 ```bash
@@ -72,4 +77,4 @@ npm install && npm test
 
 ```bash
 $ npm install && npm link
-```
\ No newline at end of file
+```
diff --git a/src/bbrun.js b/src/bbrun.js
index 448effa..3c38f26 100644
--- a/src/bbrun.js
+++ b/src/bbrun.js
@@ -36,9 +36,10 @@ module.exports = function(options, stepName) {
       `"script" section not found in step:\n${JSON.stringify(step, null, 4)}`
     );
     const dockerImage = step.image || image;
+    const imageName = docker.extractImageName(dockerImage);
     console.log(
-      `executing step${stepName ? ` "${stepName}"` : ""} in "${dockerImage}"`
+      `executing step${stepName ? ` "${stepName}"` : ""} in "${imageName}"`
     );
-    exec(step.script, dockerImage, options);
+    exec(step.script, imageName, options);
   }
 };
diff --git a/src/docker.js b/src/docker.js
index d242fab..6b4ffff 100644
--- a/src/docker.js
+++ b/src/docker.js
@@ -50,5 +50,16 @@ function run(commands, image, dryRun, interactive, workDir) {
   }
 }
 
+function extractImageName(image) {
+  if (typeof image === "string" || image instanceof String) {
+    return image;
+  } else if (image.name) {
+    return image.name;
+  } else {
+    throw new Error(`"${JSON.stringify(image)}" is not a valid image`);
+  }
+}
+
 module.exports.checkExists = checkExists;
 module.exports.run = run;
+module.exports.extractImageName = extractImageName;
diff --git a/test/__snapshots__/integration.test.js.snap b/test/__snapshots__/integration.test.js.snap
index 8fd71fd..fae9a12 100644
--- a/test/__snapshots__/integration.test.js.snap
+++ b/test/__snapshots__/integration.test.js.snap
@@ -39,6 +39,16 @@ build script:
 "
 `;
 
+exports[`should resolve private image names 1`] = `
+"executing step in \\"account-name/openjdk:8\\"
+docker command:
+	docker run  -P -v PWD:/ws -w /ws account-name/openjdk:8 sh .bbrun.sh
+build script:
+	set -e
+	echo \\"testing stuff\\"
+"
+`;
+
 exports[`single step pipeline executes the default step with no arguments 1`] = `
 "executing step in \\"ubuntu\\"
 docker command:
diff --git a/test/integration.test.js b/test/integration.test.js
index cf67488..8aff45a 100644
--- a/test/integration.test.js
+++ b/test/integration.test.js
@@ -52,6 +52,15 @@ it("no image template should use default atlassian image", () => {
   expect(res.code).toBe(0);
 });
 
+it("should resolve private image names", () => {
+  const res = run(
+    "--template test/templates/private-image-template.yml --dry-run"
+  );
+  expect(norm(res.stdout)).toMatchSnapshot();
+  expect(res.stderr).toBe("");
+  expect(res.code).toBe(0);
+});
+
 describe("template with multiple steps in the default pipeline", () => {
   it("should execute all the default steps when no argument is provided", () => {
     const res = run(
diff --git a/test/templates/private-image-template.yml b/test/templates/private-image-template.yml
new file mode 100644
index 0000000..9781e93
--- /dev/null
+++ b/test/templates/private-image-template.yml
@@ -0,0 +1,12 @@
+pipelines:
+  default:
+    - step:
+          name: test
+          image:
+            name: account-name/openjdk:8
+            username: $DOCKER_HUB_USERNAME
+            password: $DOCKER_HUB_PASSWORD
+            email: $DOCKER_HUB_EMAIL
+          script:
+            - echo "testing stuff"
+     
\ No newline at end of file