diff --git a/Dockerfile b/Dockerfile
new file mode 100644
index 0000000..1b4b5ad
--- /dev/null
+++ b/Dockerfile
@@ -0,0 +1,11 @@
+# Container image
+FROM ruby:3.1.1
+
+COPY . /usr/src/app
+
+RUN cd /usr/src/app && bundle install
+
+RUN chmod +x /usr/src/app/entrypoint.sh
+
+# ENTRYPOINT ["/usr/src/app/entrypoint.sh"]
+ENTRYPOINT ["ruby", "/usr/src/app/app.rb"]
\ No newline at end of file
diff --git a/Gemfile b/Gemfile
new file mode 100644
index 0000000..b5aabfc
--- /dev/null
+++ b/Gemfile
@@ -0,0 +1,3 @@
+source 'https://rubygems.org' do
+  gem 'aws-sdk-states'
+end
\ No newline at end of file
diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..1f78841
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,21 @@
+MIT License
+
+Copyright 2019 Amazon.com, Inc. or its affiliates.
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..e69de29
diff --git a/action.yml b/action.yml
new file mode 100644
index 0000000..21a03fb
--- /dev/null
+++ b/action.yml
@@ -0,0 +1,8 @@
+# action.yml
+name: 'StepFunction Deployment Monitoring'
+description: 'Polls a step function until completion.'
+runs:
+  using: 'docker'
+  image: 'Dockerfile'
+  args:
+    - ${{ inputs.STEP_FUNCTION_ARN }}
diff --git a/app.rb b/app.rb
new file mode 100644
index 0000000..b261e79
--- /dev/null
+++ b/app.rb
@@ -0,0 +1,38 @@
+require 'optparse'
+require 'aws-sdk-states'
+
+options = {}
+option_parser = OptionParser.new do |opts|
+  opts.banner = 'Usage: app.rb [options]'
+  opts.on('-e', '--execution-arn <arn>', 'Step Function Execution ARN to monitor') do |v|
+    options[:execution_arn] = v
+  end
+end
+
+option_parser.parse!
+if options[:execution_arn].nil?
+  puts 'StepFunction execution arn is required!'
+  puts option_parser.help
+  exit 1
+end
+
+def get_deployment(execution_arn)
+  aws_client = Aws::States::Client.new(region: 'eu-west-1')
+  aws_client.describe_execution({ execution_arn: execution_arn })
+end
+
+deployment_status = get_deployment(options[:execution_arn]).status
+
+# One of: "RUNNING", "SUCCEEDED", "FAILED", "TIMED_OUT", "ABORTED"
+if deployment_status == 'RUNNING'
+  puts 'Deployment in progress...🔄'
+  sleep 15 until get_deployment(options[:execution_arn]).status != 'RUNNING'
+end
+
+if %w[FAILED TIMED_OUT ABORTED].include?(deployment_status)
+  puts "Deployment Failed: #{deployment_status} ❌"
+  exit 1
+elsif deployment_status == 'SUCCEEDED'
+  puts 'Deployment Successful 🎉'
+  exit 0
+end
diff --git a/entrypoint.sh b/entrypoint.sh
new file mode 100644
index 0000000..84e7134
--- /dev/null
+++ b/entrypoint.sh
@@ -0,0 +1,2 @@
+#!/bin/bash
+ruby /usr/src/app/app.rb $STEP_FUNCTION_ARN