diff --git a/.eslintignore b/.eslintignore
index 0979a6c0..cb3fd15f 100644
--- a/.eslintignore
+++ b/.eslintignore
@@ -1 +1,2 @@
 **/node_modules/**
+**/dist/**
diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 5455fc3b..94000aea 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -9,46 +9,47 @@ env:
   PROJECT_PATH: test-project
 
 jobs:
-#  test:
-#    name: Test the project
-#    runs-on: ubuntu-latest
-#    steps:
-#      - uses: actions/checkout@v1
-#      - uses: webbertakken/unity-activate@v1
-#      - uses: webbertakken/unity-test-runner@v1.1
-#      - uses: webbertakken/unity-return-license@v1
-#        if: always()
-#      - uses: actions/upload-artifact@v1
-#        with:
-#          name: Test results
-#          path: artifacts/
+  #  test:
+  #    name: Test the project
+  #    runs-on: ubuntu-latest
+  #    steps:
+  #      - uses: actions/checkout@v1
+  #      - uses: webbertakken/unity-activate@v1
+  #      - uses: webbertakken/unity-test-runner@v1.1
+  #      - uses: webbertakken/unity-return-license@v1
+  #        if: always()
+  #      - uses: actions/upload-artifact@v1
+  #        with:
+  #          name: Test results
+  #          path: artifacts/
 
   buildForWebGL:
     name: Build for WebGL
-#    needs: [test]
+    #    needs: [test]
     runs-on: ubuntu-latest
     steps: # webbertakken/unity-builder@v0.3-webgl
       - uses: actions/checkout@v1
       - uses: webbertakken/unity-activate@v1
       - uses: ./
+        with:
+          projectPath: test-project
       - uses: webbertakken/unity-return-license@v1
         if: always()
       - uses: actions/upload-artifact@v1
         with:
           name: Build
           path: build
-
-  buildForAndroid:
-    name: Build for Android
-#    needs: [test]
-    runs-on: ubuntu-latest
-    steps: # webbertakken/unity-builder@v0.3-android
-      - uses: actions/checkout@v1
-      - uses: webbertakken/unity-activate@v1
-      - uses: ./
-      - uses: webbertakken/unity-return-license@v1
-        if: always()
-      - uses: actions/upload-artifact@v1
-        with:
-          name: Build
-          path: build
+#  buildForAndroid:
+#    name: Build for Android
+#    #    needs: [test]
+#    runs-on: ubuntu-latest
+#    steps: # webbertakken/unity-builder@v0.3-android
+#      - uses: actions/checkout@v1
+#      - uses: webbertakken/unity-activate@v1
+#      - uses: ./
+#      - uses: webbertakken/unity-return-license@v1
+#        if: always()
+#      - uses: actions/upload-artifact@v1
+#        with:
+#          name: Build
+#          path: build
diff --git a/.prettierignore b/.prettierignore
new file mode 100644
index 00000000..cb3fd15f
--- /dev/null
+++ b/.prettierignore
@@ -0,0 +1,2 @@
+**/node_modules/**
+**/dist/**
diff --git a/dist/index.js b/dist/index.js
index 2350318a..f7a2843e 100644
Binary files a/dist/index.js and b/dist/index.js differ
diff --git a/dist/run-unity-builder.sh b/dist/run-unity-builder.sh
index d4cc9f36..deba43bf 100644
--- a/dist/run-unity-builder.sh
+++ b/dist/run-unity-builder.sh
@@ -1,19 +1,73 @@
-#!/usr/bin/env sh
+#!/bin/sh
+
+#
+# Input variables
+#
 
 PROJECT_PATH=$1
+UNITY_VERSION="2019.2.11f1"
 BUILD_TARGET=$2
 BUILD_NAME=$3
 BUILDS_PATH=$4
 BUILD_METHOD=$5
 
-DOCKER_IMAGE_TAG=unity-builder-image
+#
+# Default variables
+#
 
-echo "Running docker container with specific tag"
+# PROJECT_PATH = test-project
+# BUILD_TARGET =
+# BUILD_NAME =
+# BUILDS_PATH =
+# BUILD_METHOD =
+# HOME = /home/runner
+# GITHUB_REF = refs/pull/8/merge
+# GITHUB_SHA = 0e697e1f2d80e0e8505c0e0dcff76d24bc7a4f36
+# GITHUB_REPOSITORY = webbertakken/unity-builder
+# GITHUB_ACTOR = webbertakken
+# GITHUB_WORKFLOW = Actions 😎
+# GITHUB_HEAD_REF = prepare-for-multi-target
+# GITHUB_BASE_REF = master
+# GITHUB_EVENT_NAME = pull_request
+# GITHUB_WORKSPACE = /home/runner/work/unity-builder/unity-builder
+# GITHUB_ACTION = self
+# GITHUB_EVENT_PATH = /home/runner/work/_temp/_github_workflow/event.json
+# RUNNER_OS = Linux
+# RUNNER_TOOL_CACHE = /opt/hostedtoolcache
+# RUNNER_TEMP = /home/runner/work/_temp
+# RUNNER_WORKSPACE = /home/runner/work/unity-builder
 
-docker build \
-  --file ../Dockerfile \
-  --tag DOCKER_IMAGE_TAG \
-  ../
+#
+# Internal variables
+#
+
+ACTION_ROOT=$(dirname $(dirname $(readlink -fm "$0")))
+DOCKER_IMAGE_TAG=webber-unity:$UNITY_VERSION-$BUILD_TARGET
+
+# TODO - Remove debug statements below
+
+echo "Listing ACTION_ROOT"
+ls $ACTION_ROOT
+echo ""
+echo "Listing GITHUB_WORKSPACE"
+ls $GITHUB_WORKSPACE
+echo ""
+echo "Listing RUNNER_WORKSPACE"
+ls $RUNNER_WORKSPACE
+echo ""
+
+#
+# Build image
+#
+
+echo "Building docker images for $BUILD_TARGET"
+docker build $GITHUB_WORKSPACE \
+  --file $ACTION_ROOT/Dockerfile \
+  --tag $DOCKER_IMAGE_TAG
+
+#
+# Run specified container
+#
 
 docker run \
   --workdir /github/workspace \
@@ -23,7 +77,7 @@ docker run \
   --env BUILD_NAME \
   --env BUILDS_PATH \
   --env BUILD_METHOD \
-  --env HOME \
+  --env HOME=/github/home \
   --env GITHUB_REF \
   --env GITHUB_SHA \
   --env GITHUB_REPOSITORY \
@@ -32,7 +86,7 @@ docker run \
   --env GITHUB_HEAD_REF \
   --env GITHUB_BASE_REF \
   --env GITHUB_EVENT_NAME \
-  --env GITHUB_WORKSPACE \
+  --env GITHUB_WORKSPACE=/github/workspace \
   --env GITHUB_ACTION \
   --env GITHUB_EVENT_PATH \
   --env RUNNER_OS \
@@ -43,4 +97,4 @@ docker run \
   --volume "/home/runner/work/_temp/_github_home":"/github/home" \
   --volume "/home/runner/work/_temp/_github_workflow":"/github/workflow" \
   --volume "${PWD}":"/github/workspace" \
-  DOCKER_IMAGE_TAG
+  $DOCKER_IMAGE_TAG
diff --git a/entrypoint.sh b/entrypoint.sh
index b7aade2f..2330355a 100644
--- a/entrypoint.sh
+++ b/entrypoint.sh
@@ -3,7 +3,9 @@
 #
 # Set project path
 #
+
 UNITY_PROJECT_PATH=$GITHUB_WORKSPACE/$PROJECT_PATH
+echo "Using project path \"$UNITY_PROJECT_PATH\"."
 
 #
 # Set the name for the build
@@ -12,6 +14,7 @@ UNITY_PROJECT_PATH=$GITHUB_WORKSPACE/$PROJECT_PATH
 if [ -z "$BUILD_NAME" ]; then
   BUILD_NAME="build-$(date '+%F-%H%M')"
 fi
+echo "Using build name \"$BUILD_NAME\"."
 
 #
 # Set the builds target platform;
@@ -28,6 +31,7 @@ fi
 if [ -z "$BUILD_TARGET" ]; then
   BUILD_TARGET=WebGL
 fi
+echo "Using build target \"$BUILD_TARGET\"."
 
 #
 # Set builds path
@@ -37,13 +41,9 @@ if [ -z "$BUILDS_PATH" ]; then
   BUILDS_PATH=build
 fi
 BUILDS_FULL_PATH=$GITHUB_WORKSPACE/$BUILDS_PATH
-
-#
-# Set path for current build (relative and full)
-#
-
 CURRENT_BUILD_PATH=$BUILDS_PATH/$BUILD_TARGET
 CURRENT_BUILD_FULL_PATH=$BUILDS_FULL_PATH/$BUILD_TARGET
+echo "Using build path \"$CURRENT_BUILD_PATH\"."
 
 #
 # Set the build method, must reference one of:
@@ -62,6 +62,7 @@ if [ -z "$BUILD_METHOD" ]; then
   # Use the script from this action which builds the scenes that are enabled in
   # the project.
   #
+  echo "Using built-in build method."
   # Create Editor directory if it does not exist
   mkdir -p $UNITY_PROJECT_PATH/Assets/Editor/
   # Copy the build script of Unity Builder action
diff --git a/package.json b/package.json
index c62b6f41..4cf7db46 100644
--- a/package.json
+++ b/package.json
@@ -9,6 +9,7 @@
   "scripts": {
     "build": "ncc build src/index.js -o dist -m",
     "watch": "yarn build -w",
+    "start": "node dist/index.js",
     "lint": "prettier --check \"src/**/*.js\" && eslint src",
     "test": "jest --passWithNoTests"
   },
@@ -48,7 +49,7 @@
       "git add",
       "jest --findRelatedTests"
     ],
-    "*.{json,sh,md,yaml,yml}": [
+    "*.{json,md,yaml,yml}": [
       "prettier --write",
       "git add"
     ]
diff --git a/src/index.js b/src/index.js
index d0f80c8d..44c15b80 100644
--- a/src/index.js
+++ b/src/index.js
@@ -3,44 +3,23 @@ const path = require('path');
 const { exec } = require('@actions/exec');
 
 async function action() {
-  // Path to the project to open with Unity
-  const projectPath = core.getInput('projectPath', {
-    required: false,
-    default: './',
-  });
+  // Explicitly notify about platform support
+  if (process.platform !== 'linux') {
+    throw new Error('Currently only Linux-based platforms are supported');
+  }
 
-  // Target platform for the build
-  const buildTarget = core.getInput('buildTarget', {
-    required: false,
-    default: 'WebGL',
-  });
-
-  // Name of the build
-  const buildName = core.getInput('buildName', {
-    required: false,
-    default: 'TestBuild',
-  });
-
-  // Path where build will be stored
-  const buildsPath = core.getInput('buildsPath', {
-    required: false,
-    default: 'build',
-  });
-
-  // Method to execute within unity. Must be static
-  const buildMethod = core.getInput('buildMethod', {
-    required: false,
-    default: '',
-  });
+  // Input variables specified in workflows using "with" prop.
+  const projectPath = core.getInput('projectPath', { default: './' });
+  const buildTarget = core.getInput('buildTarget', { default: 'WebGL' });
+  const buildName = core.getInput('buildName', { default: 'TestBuild' });
+  const buildsPath = core.getInput('buildsPath', { default: 'build' });
+  const buildMethod = core.getInput('buildMethod', { default: '' });
 
   // Run appropriate docker image with given args
-  await exec(path.join(__dirname, 'run-unity-builder.sh'), [
-    projectPath,
-    buildTarget,
-    buildName,
-    buildsPath,
-    buildMethod,
-  ]);
+  const bootstrapper = path.join(__dirname, 'run-unity-builder.sh');
+  await exec(`ls ${bootstrapper}`);
+  await exec(`chmod +x ${bootstrapper}`);
+  await exec(bootstrapper, [projectPath, buildTarget, buildName, buildsPath, buildMethod]);
 }
 
 action().catch(error => {
diff --git a/src/run-unity-builder.sh b/src/run-unity-builder.sh
index d4cc9f36..deba43bf 100644
--- a/src/run-unity-builder.sh
+++ b/src/run-unity-builder.sh
@@ -1,19 +1,73 @@
-#!/usr/bin/env sh
+#!/bin/sh
+
+#
+# Input variables
+#
 
 PROJECT_PATH=$1
+UNITY_VERSION="2019.2.11f1"
 BUILD_TARGET=$2
 BUILD_NAME=$3
 BUILDS_PATH=$4
 BUILD_METHOD=$5
 
-DOCKER_IMAGE_TAG=unity-builder-image
+#
+# Default variables
+#
 
-echo "Running docker container with specific tag"
+# PROJECT_PATH = test-project
+# BUILD_TARGET =
+# BUILD_NAME =
+# BUILDS_PATH =
+# BUILD_METHOD =
+# HOME = /home/runner
+# GITHUB_REF = refs/pull/8/merge
+# GITHUB_SHA = 0e697e1f2d80e0e8505c0e0dcff76d24bc7a4f36
+# GITHUB_REPOSITORY = webbertakken/unity-builder
+# GITHUB_ACTOR = webbertakken
+# GITHUB_WORKFLOW = Actions 😎
+# GITHUB_HEAD_REF = prepare-for-multi-target
+# GITHUB_BASE_REF = master
+# GITHUB_EVENT_NAME = pull_request
+# GITHUB_WORKSPACE = /home/runner/work/unity-builder/unity-builder
+# GITHUB_ACTION = self
+# GITHUB_EVENT_PATH = /home/runner/work/_temp/_github_workflow/event.json
+# RUNNER_OS = Linux
+# RUNNER_TOOL_CACHE = /opt/hostedtoolcache
+# RUNNER_TEMP = /home/runner/work/_temp
+# RUNNER_WORKSPACE = /home/runner/work/unity-builder
 
-docker build \
-  --file ../Dockerfile \
-  --tag DOCKER_IMAGE_TAG \
-  ../
+#
+# Internal variables
+#
+
+ACTION_ROOT=$(dirname $(dirname $(readlink -fm "$0")))
+DOCKER_IMAGE_TAG=webber-unity:$UNITY_VERSION-$BUILD_TARGET
+
+# TODO - Remove debug statements below
+
+echo "Listing ACTION_ROOT"
+ls $ACTION_ROOT
+echo ""
+echo "Listing GITHUB_WORKSPACE"
+ls $GITHUB_WORKSPACE
+echo ""
+echo "Listing RUNNER_WORKSPACE"
+ls $RUNNER_WORKSPACE
+echo ""
+
+#
+# Build image
+#
+
+echo "Building docker images for $BUILD_TARGET"
+docker build $GITHUB_WORKSPACE \
+  --file $ACTION_ROOT/Dockerfile \
+  --tag $DOCKER_IMAGE_TAG
+
+#
+# Run specified container
+#
 
 docker run \
   --workdir /github/workspace \
@@ -23,7 +77,7 @@ docker run \
   --env BUILD_NAME \
   --env BUILDS_PATH \
   --env BUILD_METHOD \
-  --env HOME \
+  --env HOME=/github/home \
   --env GITHUB_REF \
   --env GITHUB_SHA \
   --env GITHUB_REPOSITORY \
@@ -32,7 +86,7 @@ docker run \
   --env GITHUB_HEAD_REF \
   --env GITHUB_BASE_REF \
   --env GITHUB_EVENT_NAME \
-  --env GITHUB_WORKSPACE \
+  --env GITHUB_WORKSPACE=/github/workspace \
   --env GITHUB_ACTION \
   --env GITHUB_EVENT_PATH \
   --env RUNNER_OS \
@@ -43,4 +97,4 @@ docker run \
   --volume "/home/runner/work/_temp/_github_home":"/github/home" \
   --volume "/home/runner/work/_temp/_github_workflow":"/github/workflow" \
   --volume "${PWD}":"/github/workspace" \
-  DOCKER_IMAGE_TAG
+  $DOCKER_IMAGE_TAG