update readme

Dockerfile

@@ -1,4 +1,4 @@
-FROM ubuntu:20.04
+FROM debian:10.6-slim
 
 RUN apt-get update && \
     apt-get install -y \

README.md

@@ -1,2 +1,17 @@
-# consul_configs_submit_action
-Submit Consul configurations to server
+# Submit Consul Configurations
+
+A GitHub Action that finds all configuration files and uploads them to a Consul Server
+## Features
+
+Searches all subdirectories of `location` using `regex` expression. All matched files will be uploaded to the Consul Server at `addr`.
+
+## Example Usage
+```
+    - name: consul
+      uses: pennsignals/consul_configs_submit_action@main
+      with:
+        addr: 'http://10.146.0.5:8500/v1/kv' # required
+        regex: '^.*.(yaml|yml|conf|json)$' # required
+        location: "./project/local" # optional (default = "./")
+        path: "organization/project/tag" # optional (default = "")
+```