Restructure and add quickstart to docs

docs/getting-started/quickstart.mdx

@@ -0,0 +1,43 @@
+---
+title: "Quickstart"
+---
+
+This example demonstrates how to store and inject environment variables from [Infisical Cloud](https://app.infisical.com) into your application.
+
+Note that the Infisical CLI is platform-agnostic and can inject environment variables across many tech stacks and frameworks.
+
+## Set up Infisical Cloud
+
+1. Login or create an accout at `app.infisical.com`.
+2. Create a new project.
+3. Populate your environment variables as in the image below.
+
+![project quickstart](../images/project-quickstart.png)
+
+## Set up the CLI
+
+1. Follow the instructions to [install the CLI](/cli/overview).
+
+2. Initialize Infisical for your project.
+
+```bash
+# move to your project
+cd /path/to/project
+
+# initialize infisical
+infisical init
+```
+
+## Start your app with environment variables injected
+
+```bash
+# inject environment variables into app
+infisical run -- [your application start command]
+```
+
+<Info>
+  Check out our [integrations](/integrations/overview) for injecting environment
+  variables into frameworks and platforms like Docker.
+</Info>
+
+Your app should be running with the environment variables injected.