feat: Adjust docs to use vitepress

packages/docs/pages/guide/installation.md

@@ -0,0 +1,44 @@
+# Installation
+
+<!-- TODO: Add instructions to install PostgreSQL and specify supported node versions -->
+
+Automatisch supports both npm and docker installation.
+
+### npm
+
+You can try Automatisch without installing by using [npx](https://docs.npmjs.com/cli/v8/commands/npx).
+
+```bash
+npx automatisch
+```
+
+Or you can install Automatisch globally via [npm](https://docs.npmjs.com/downloading-and-installing-node-js-and-npm).
+
+```bash
+npm install automatisch -g
+```
+
+You need to run the start command after the installation.
+
+```bash
+automatisch start
+```
+
+### docker
+
+You can also use [docker](https://docs.docker.com/get-docker/) to install Automatisch.
+
+```bash
+docker run -it \
+	--name automatisch \
+	-p 3000:3000 \
+	automatisch start
+```
+
+<!-- TODO: Check requirements of https usage and revise the document accordingly -->
+
+## Let's discover!
+
+✌️ That's it; you have Automatisch running. Let's check it out by browsing [http://localhost:3000](http://localhost:3000)
+
+If you see any problem while installing Automatisch, let us know via [github issues](https://github.com/automatisch/automatisch/issues) or our [discord server](https://discord.gg/dJSah9CVrC).