diff --git a/.dockerignore b/.dockerignore
new file mode 100644
index 0000000..1b9c1a6
--- /dev/null
+++ b/.dockerignore
@@ -0,0 +1,6 @@
+# Order ignore, include
+*
+
+# Files required for the action
+!entrypoint.sh
+!action.yml
diff --git a/Dockerfile b/Dockerfile
new file mode 100644
index 0000000..22fca4c
--- /dev/null
+++ b/Dockerfile
@@ -0,0 +1,14 @@
+FROM gableroux/unity3d:2019.2.11f1
+
+LABEL "com.github.actions.name"="Unity - Test runner"
+LABEL "com.github.actions.description"="Run tests for any Unity project."
+LABEL "com.github.actions.icon"="box"
+LABEL "com.github.actions.color"="gray-dark"
+
+LABEL "repository"="http://github.com/webbertakken/unity-actions"
+LABEL "homepage"="http://github.com/webbertakken/unity-actions"
+LABEL "maintainer"="Webber Takken <webber@takken.io>"
+
+ADD entrypoint.sh /entrypoint.sh
+RUN chmod +x /entrypoint.sh
+ENTRYPOINT ["/entrypoint.sh"]
diff --git a/README.md b/README.md
index e9cda09..92f190b 100644
--- a/README.md
+++ b/README.md
@@ -11,3 +11,56 @@ action from the
 collection. 
 
 Requires the [activation](https://github.com/marketplace/actions/unity-activate) step.
+
+## Usage
+
+Create or edit the file called `.github/workflows/activation.yml` and add a job to it.
+
+```yaml
+name: Test project
+on: [push]
+jobs:
+  testRunnerInAllModes:
+    name: Test all modes ✨
+    runs-on: ubuntu-latest
+    steps:
+```
+
+Configure the test runner as follows:
+
+```yaml
+      # Configure test runner
+      - name: Run tests
+        id: myTestStep
+        uses: webbertakken/unity-test-runner@v1
+        env:
+          UNITY_LICENSE: ${{ secrets.UNITY_LICENSE }}
+
+          # Choose: "all", "playmode", "editmode"
+          TEST_MODE: all                
+          
+          # Optional: Folder of your project, leave blank for "./"
+          UNITY_PROJECT_PATH: relative/path/to/your/project
+
+          # Optional: Artifacts folder, leave blank for "artifacts"
+          ARTIFACTS_FOLDER: store/artifacts/here
+```
+
+You use the id to **upload the artifacts** like so:
+
+```yaml
+      # Upload artifacts
+      - name: Upload test results
+        uses: actions/upload-artifact@v1
+        with:
+          name: Test results
+          path: ${{ steps.myTestStep.outputs.artifactsPath }}
+```
+
+Commit and push your workflow definition.
+
+## More actions
+
+Visit 
+[Unity Actions](https://github.com/webbertakken/unity-actions) 
+to find related actions for Unity.
diff --git a/action.yml b/action.yml
new file mode 100644
index 0000000..c933792
--- /dev/null
+++ b/action.yml
@@ -0,0 +1,13 @@
+name: 'Unity - Test runner'
+author: Webber Takken <webber@takken.io>
+description: 'Run tests for any Unity project.'
+inputs: {}
+outputs:
+  artifactsPath:
+    description: 'Path where the artifacts are stored'
+runs:
+  using: 'docker'
+  image: 'Dockerfile'
+branding:
+  icon: 'box'
+  color: 'gray-dark'
diff --git a/entrypoint.sh b/entrypoint.sh
new file mode 100644
index 0000000..3a922f5
--- /dev/null
+++ b/entrypoint.sh
@@ -0,0 +1,191 @@
+#!/usr/bin/env bash
+
+# Set the license file path
+LICENSE_FILE_PATH=UnityLicenseFile.ulf
+UNITY_PROJECT_PATH=$GITHUB_WORKSPACE/$UNITY_PROJECT_PATH
+
+# Set the artifacts path
+if [ -z "$ARTIFACTS_FOLDER" ]; then
+  ARTIFACTS_FOLDER=artifacts
+fi
+ARTIFACTS_PATH=$GITHUB_WORKSPACE/$ARTIFACTS_FOLDER
+
+# Set the modes for testing
+case $TEST_MODE in
+  editmode)
+    echo "Edit mode selected for testing."
+    EDIT_MODE=true
+    ;;
+  playmode)
+    echo "Play mode selected for testing."
+    PLAY_MODE=true
+    ;;
+  *)
+    echo "All modes selected for testing."
+    EDIT_MODE=true
+    PLAY_MODE=true
+    ;;
+esac
+
+# Copy license file from Github variables
+echo "$UNITY_LICENSE" | tr -d '\r' > $LICENSE_FILE_PATH
+echo "$UNITY_LICENSE" | tr -d '\r' > /root/.local/share/unity3d/Unity/Unity_lic.ulf
+# TODO - test if this line has any effect
+echo "$UNITY_LICENSE" | tr -d '\r' > /root/.local/share/unity3d/Unity/Unity_v2019.x.ulf
+
+##
+## Activate license
+##
+echo "Requesting activation"
+xvfb-run --auto-servernum --server-args='-screen 0 640x480x24' \
+  /opt/Unity/Editor/Unity \
+    -batchmode \
+    -nographics \
+    -logFile /dev/stdout \
+    -quit \
+    -manualLicenseFile $LICENSE_FILE_PATH
+# This is expected to always exit with code 1 (both success and failure).
+# Convert to exit code 0 by echoing the current exit code.
+echo $?
+# Exit code is now 0
+
+
+# The following tests are 2019 mode (requires Unity 2019.2.11f1 or later)
+# Reference: https://docs.unity3d.com/2019.3/Documentation/Manual/CommandLineArguments.html
+
+#
+# Overall info
+#
+
+echo ""
+echo "###########################"
+echo "#    Artifacts folder     #"
+echo "###########################"
+echo ""
+echo "Creating \"$ARTIFACTS_PATH\" if it does not exist."
+mkdir -p $ARTIFACTS_PATH
+
+echo ""
+echo "###########################"
+echo "#    Project directory    #"
+echo "###########################"
+echo ""
+ls -alh $UNITY_PROJECT_PATH
+
+#
+# Testing in EditMode
+#
+
+if [ $EDIT_MODE = true ]; then
+  echo ""
+  echo "###########################"
+  echo "#   Testing in EditMode   #"
+  echo "###########################"
+  echo ""
+  xvfb-run --auto-servernum --server-args='-screen 0 640x480x24' \
+    /opt/Unity/Editor/Unity \
+      -batchmode \
+      -logfile /dev/stdout \
+      -projectPath "$UNITY_PROJECT_PATH" \
+      -runTests \
+      -testPlatform editmode \
+      -testResults "$ARTIFACTS_PATH/editmode-results.xml"
+
+  # Catch exit code
+  EDIT_MODE_EXIT_CODE=$?
+
+  # Display results
+  if [ $EDIT_MODE_EXIT_CODE -eq 0 ]; then
+    echo "Run succeeded, no failures occurred";
+  elif [ $EDIT_MODE_EXIT_CODE -eq 2 ]; then
+    echo "Run succeeded, some tests failed";
+  elif [ $EDIT_MODE_EXIT_CODE -eq 3 ]; then
+    echo "Run failure (other failure)";
+  else
+    echo "Unexpected exit code $EDIT_MODE_EXIT_CODE";
+  fi
+fi
+
+#
+# Testing in PlayMode
+#
+
+if [ $PLAY_MODE = true ]; then
+  echo ""
+  echo "###########################"
+  echo "#   Testing in PlayMode   #"
+  echo "###########################"
+  echo ""
+  xvfb-run --auto-servernum --server-args='-screen 0 640x480x24' \
+    /opt/Unity/Editor/Unity \
+      -batchmode \
+      -logfile /dev/stdout \
+      -projectPath "$UNITY_PROJECT_PATH" \
+      -runTests \
+      -testPlatform playmode \
+      -testResults "$ARTIFACTS_PATH/playmode-results.xml"
+
+  # Catch exit code
+  PLAY_MODE_EXIT_CODE=$?
+
+  # Display results
+  if [ $PLAY_MODE_EXIT_CODE -eq 0 ]; then
+    echo "Run succeeded, no failures occurred";
+  elif [ $PLAY_MODE_EXIT_CODE -eq 2 ]; then
+    echo "Run succeeded, some tests failed";
+  elif [ $PLAY_MODE_EXIT_CODE -eq 3 ]; then
+    echo "Run failure (other failure)";
+  else
+    echo "Unexpected exit code $PLAY_MODE_EXIT_CODE";
+  fi
+fi
+
+#
+# Results
+#
+
+echo ""
+echo "###########################"
+echo "#    Project directory    #"
+echo "###########################"
+echo ""
+ls -alh $UNITY_PROJECT_PATH
+
+if [ $EDIT_MODE = true ]; then
+  echo ""
+  echo "###########################"
+  echo "#    Edit Mode Results    #"
+  echo "###########################"
+  echo ""
+  cat "$ARTIFACTS_PATH/editmode-results.xml"
+  cat "$ARTIFACTS_PATH/editmode-results.xml" | grep test-run | grep Passed
+fi
+
+if [ $PLAY_MODE = true ]; then
+  echo ""
+  echo "###########################"
+  echo "#    Edit Mode Results    #"
+  echo "###########################"
+  echo ""
+  cat "$ARTIFACTS_PATH/playmode-results.xml"
+  cat "$ARTIFACTS_PATH/playmode-results.xml" | grep test-run | grep Passed
+fi
+
+#
+# Output variables
+#
+
+# Set resulting name as output variable
+echo ::set-output name=artifactsPath::$ARTIFACTS_PATH
+
+#
+# Exit
+#
+
+if [ $EDIT_MODE_EXIT_CODE -gt 0 ]; then
+  exit $EDIT_MODE_EXIT_CODE
+fi
+
+if [ $PLAY_MODE_EXIT_CODE -gt 0 ]; then
+  exit $PLAY_MODE_EXIT_CODE
+fi