docs: add badges to readme

Author: johanbook

CONTRIBUTING.md

@@ -12,14 +12,14 @@ The software is shipped in Docker images.
 ## Security
 
 The software is intended to be run on
-[Nodejs 16.18.0 LTS](https://nodejs.org/en/) and all released versions have 0
-vulnerabilities in NPM audits. This check is carried out as part of the release
-procedure.
-
-The software relies on the
+[Nodejs 16.18.0 LTS](https://nodejs.org/en/). The software relies on the
 [Nodejs HTTP module](https://nodejs.org/api/http.html) and will be vulnerable to
 any vulnerabilities in that module.
 
+All released versions have 0 vulnerabilities in NPM audits. This check is
+carried out as part of the release process. The repository is also scanned
+weekly with [Snyk](snyk.io) for vulnerabilities.
+
 The software has been tested for
 [LFI](https://www.johanbook.com/docs/security/vulnerabilities/lfi)
 vulnerabilities.

README.md

@@ -1,9 +1,15 @@
 # file-domain-server
 
+![version](https://img.shields.io/github/v/tag/johanbook/file-domain-server)
+![docker pulls](https://img.shields.io/docker/pulls/johanbook/file-domain-server)
+![vulnerabilities](https://img.shields.io/snyk/vulnerabilities/github/johanbook/file-domain-server)
+
 **file-domain-server** is a simplistic Nodejs HTTP file server that serves
 different folders depending on the HTTP `Host` header. It is mainly intended to
 run on an internal network with its own DNS server.
 
+The project aims to be minimal production dependency.
+
 ## Get started
 
 The server can be run either via a Nodejs runtime or through Docker.
@@ -30,6 +36,15 @@ build/mycat.com/index.html
 build/mycat.com/script.js
 ```
 
+### Using Nodejs
+
+Install and run the server using
+
+```sh
+npm ci --production
+ROOT_FILE_PATH=/path/to/folder node src
+```
+
 ### Using Docker
 
 The server can be run through Docker by mounting in the served directory as a