Update Readme

Author: hansottowirtz

README.md

@@ -1,34 +1,48 @@
-# AWS Sharp layer
-This AWS lambda layer contains a pre-built [sharp](https://www.npmjs.com/package/sharp) npm library.
-It is optimized for the most frugal space usage possible.
+# AWS Lambda layer for Sharp
+
+![Releases](https://img.shields.io/github/v/release/bubblydoo/lambda-layer-sharp.svg)
+![Build Layer ZIP](https://github.com/bubblydoo/lambda-layer-sharp/workflows/Build%20Layer%20ZIP/badge.svg)
+
+This AWS Lambda layer contains a pre-built [Sharp](https://www.npmjs.com/package/sharp) binary. New releases are automatically published in this repository on each Sharp update.
+
+## Download
 
-# Getting
 A pre-built layer zip file is available on the [Releases page](https://github.com/bubblydoo/lambda-layer-sharp/releases), alongside the size of the layer.
 
-# Building
+## Build
+
+### Dependencies
 
-## Dependencies
 * Docker
 
-## Steps
+### Steps
+
 1. Clone the repo: 
-    ```shell script
-    git clone git@github.com:Umkus/lambda-layer-sharp.git
+    ```sh
+    git clone git@github.com:bubblydoo/lambda-layer-sharp.git
     cd lambda-layer-sharp/
     ```
 1. Install dependencies:
-    ```shell script
+    ```sh
     docker run -v "$PWD":/var/task lambci/lambda:build-nodejs12.x npm --no-optional --no-audit --progress=false install
     ```
 1. Build the layer:
-    ```shell script
+    ```sh
     docker run -v "$PWD":/var/task lambci/lambda:build-nodejs12.x node ./node_modules/webpack/bin/webpack.js
     ```
 1. Perform a smoke-test:
-    ```shell script
+    ```sh
     docker run -w /var/task/dist/nodejs -v "$PWD":/var/task lambci/lambda:build-nodejs12.x node -e "console.log(require('sharp'))"
     ```
 1. Import created layer into your AWS account:
-    ```shell script
+    ```sh
     aws lambda publish-layer-version --layer-name sharp --description "Sharp layer" --license-info "Apache License 2.0" --zip-file fileb://dist/sharp-layer.zip --compatible-runtimes nodejs12.x
     ```
+
+## Auto-publish
+
+The [build Github Action](/.github/workflows/docker-workflow.yml) is automatically triggered by [Dependabot](/.github/dependabot.yml), merged by [Mergify](/.mergify.yml) and then published by the same Github Action.
+
+## Credits
+
+Originally forked from [Umkus/lambda-layer-sharp](https://github.com/Umkus/lambda-layer-sharp).