diff --git a/.travis.yml b/.travis.yml
new file mode 100644
index 0000000..be18f83
--- /dev/null
+++ b/.travis.yml
@@ -0,0 +1,39 @@
+sudo: required
+dist: trusty
+
+services:
+  - docker
+
+matrix:
+  fast_finish: true
+  include:
+    - env:
+      - PHPCS_VERSION=2.9.0
+      - IS_LATEST=1
+
+before_script:
+  - docker build --rm --tag herloct/phpcs:$PHPCS_VERSION-$TRAVIS_BRANCH .
+  - docker run --rm herloct/phpcs:$PHPCS_VERSION-$TRAVIS_BRANCH
+
+script:
+  - cd tests
+  - docker run --rm
+    --volume $(pwd):/project
+    herloct/phpcs:$PHPCS_VERSION-$TRAVIS_BRANCH --version
+  - docker run --rm
+    --volume $(pwd):/project
+    herloct/phpcs:$PHPCS_VERSION-$TRAVIS_BRANCH --standard=PSR1,PSR2 --report-file=report Sample.php || true
+  - if [[ ! -f "report" ]]; then exit 1; fi
+  - cat report
+
+after_success:
+  - docker login -u "$DOCKER_USERNAME" -p "$DOCKER_PASSWORD";
+  - docker push herloct/phpcs:$PHPCS_VERSION-$TRAVIS_BRANCH;
+  - if [[ $TRAVIS_TAG ]]; then
+    docker tag herloct/phpcs:$PHPCS_VERSION-$TRAVIS_BRANCH herloct/phpcs:$PHPCS_VERSION;
+    docker push herloct/phpcs:$PHPCS_VERSION;
+    fi
+  - if [[ $TRAVIS_TAG ]] && [[ $IS_LATEST == 1 ]]; then
+    docker tag herloct/phpcs:$PHPCS_VERSION herloct/phpcs:latest;
+    docker push herloct/phpcs:latest;
+    fi
diff --git a/Dockerfile b/Dockerfile
index 332996b..f3bc7ed 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,8 +1,8 @@
-FROM php:7.1.1-alpine
+FROM php:7.1.5-alpine
 
 MAINTAINER herloct <herloct@gmail.com>
 
-ENV PHPCS_VERSION=2.8.1
+ENV PHPCS_VERSION=2.9.0
 
 RUN curl -L https://github.com/squizlabs/PHP_CodeSniffer/releases/download/$PHPCS_VERSION/phpcs.phar > /usr/local/bin/phpcs \
     && chmod +x /usr/local/bin/phpcs \
diff --git a/README.md b/README.md
index cc48fc6..56d24ef 100644
--- a/README.md
+++ b/README.md
@@ -1,8 +1,10 @@
-[![](https://images.microbadger.com/badges/image/herloct/phpcs.svg)](http://microbadger.com/images/herloct/phpcs "Get your own image badge on microbadger.com")
+[![license](https://img.shields.io/github/license/herloct/docker-phpcs.svg)]()
+[![Build Status](https://travis-ci.org/herloct/docker-phpcs.svg?branch=master)](https://travis-ci.org/herloct/docker-phpcs)
 
 ## Supported tags and respective `Dockerfile` links
 
-* [`2.8.1`, `latest`](https://github.com/herloct/docker-phpcs/blob/2.8.1/Dockerfile)
+* [`2.9.0`, `latest`](https://github.com/herloct/docker-phpcs/blob/2.9.0/Dockerfile)
+* [`2.8.1`](https://github.com/herloct/docker-phpcs/blob/2.8.1/Dockerfile)
 * [`2.8.0`](https://github.com/herloct/docker-phpcs/blob/2.8.0/Dockerfile)
 * [`2.7.1`](https://github.com/herloct/docker-phpcs/blob/2.7.1/Dockerfile)
 
@@ -19,7 +21,7 @@ Basic usage.
 ```sh
 docker run --rm \
     --volume /local/path:/project \
-    herloct/phpcs [<options>]
+    herloct/phpcs[:tag] [<options>]
 ```
 
 For example, to check `src` directory against the PSR1 and PSR2 coding standard.
@@ -32,4 +34,4 @@ docker run --rm \
 
 ## Volumes
 
-* **/project**: Your PHP project directory.
+* `/project`: Your PHP project directory.
diff --git a/tests/Sample.php b/tests/Sample.php
new file mode 100644
index 0000000..9e85cd1
--- /dev/null
+++ b/tests/Sample.php
@@ -0,0 +1,7 @@
+<?php
+
+class Sample {
+    public function doSomething() {
+        //
+    }
+}