diff --git a/Dockerfile b/Dockerfile
new file mode 100644
index 0000000..b0d0bf3
--- /dev/null
+++ b/Dockerfile
@@ -0,0 +1,8 @@
+# Container image that runs your code
+FROM alpine:3.17.2
+
+# Copies your code file from your action repository to the filesystem path `/` of the container
+COPY entrypoint.sh /entrypoint.sh
+
+# Code file to execute when the docker container starts up (`entrypoint.sh`)
+ENTRYPOINT ["/entrypoint.sh"]
diff --git a/README.md b/README.md
index 13e4433..9017908 100644
--- a/README.md
+++ b/README.md
@@ -8,9 +8,23 @@ This repository contains the source code for the Speckle Automate GitHub Action.
 
 ## Documentation
 
-Comprehensive developer and user documentation can be found in our:
+### Inputs
 
-**📚 [Speckle Docs website](https://speckle.guide/dev/)**
+#### `who-to-greet`
+
+**Required** The name of the person to greet. Default `"World"`.
+
+### Outputs
+
+#### `time`
+
+The time we greeted you.
+
+### Example usage
+
+uses: actions/speckle-automate-github-action@v2
+with:
+  who-to-greet: 'Mona the Octocat'
 
 ## Developing & Debugging
 
diff --git a/action.yaml b/action.yaml
new file mode 100644
index 0000000..9b136f8
--- /dev/null
+++ b/action.yaml
@@ -0,0 +1,15 @@
+name: 'Hello World'
+description: 'Greet someone and record the time'
+inputs:
+  who-to-greet:  # id of input
+    description: 'Who to greet'
+    required: true
+    default: 'World'
+outputs:
+  time: # id of output
+    description: 'The time we greeted you'
+runs:
+  using: 'docker'
+  image: 'Dockerfile'
+  args:
+    - ${{ inputs.who-to-greet }}
diff --git a/entrypoint.sh b/entrypoint.sh
new file mode 100755
index 0000000..3fee027
--- /dev/null
+++ b/entrypoint.sh
@@ -0,0 +1,5 @@
+#!/bin/sh -l
+
+echo "Hello $1"
+time=$(date)
+echo "time=$time" >> $GITHUB_OUTPUT