Fully-automate development setup with Gitpod

Signed-off-by: Geoffrey Huntley <ghuntley@ghuntley.com>

.gitpod.yml

@@ -0,0 +1,16 @@
+# List the start up tasks. You can start them in parallel in multiple terminals.
+# https://www.gitpod.io/docs/config-start-tasks/
+tasks:
+  - init: >
+      make tools build
+    command: make inspect
+
+# Enable prebuilds of your project to enable faster workspace start times.
+# https://www.gitpod.io/docs/prebuilds/#configure-the-github-app
+github:
+  prebuilds:
+    master: true
+    branches: true
+    pullRequests: true
+    pullRequestsFromForks: true
+    addCheck: true

CONTRIBUTING.md

@@ -14,7 +14,9 @@ Open an issue and provide enough cotext information to repro the condition. Don'
 
 ### Environment Setup
 
-See the `BUILD PROCESS` section in the `README.md` file.
+See the `BUILD PROCESS` section in the `README.md` file. Alternatively if you have a web browser, you can get a fully pre-configured development environment in one click:
+
+[![Open in Gitpod](https://gitpod.io/button/open-in-gitpod.svg)](https://gitpod.io/#https://gitpod.io/#https://github.com/docker-slim/docker-slim)
 
 ### Enhancements
 

README.md

@@ -4,6 +4,7 @@
 [![Gitter chat](https://badges.gitter.im/docker-slim/docker-slim.svg)](https://gitter.im/docker-slim/community)
 [![Discord chat](https://img.shields.io/static/v1.svg?label=chat&message=on%20discord&color=7389D8)](https://discord.gg/9tDyxYS)
 [![Download DockerSlim](https://img.shields.io/badge/download-docker--slim-blue)](https://github.com/docker-slim/docker-slim#installation)
+[![Gitpod ready-to-code](https://img.shields.io/badge/Gitpod-ready--to--code-908a85?logo=gitpod)](https://gitpod.io/#https://github.com/docker-slim/docker-slim)
 
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